Home / 99,657,692.20-149,486,538.30-45,909,980.20

Finding the Fourth Proportional to 99,657,692.20, 149,486,538.30 and 45,909,980.20

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Solution

The fourth proportional to 99,657,692.20, 149,486,538.30 and 45,909,980.20 is: 68,864,970.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,657,692.20 : 149,486,538.30 = 45,909,980.20 : x
  2. Step 2: Convert to fraction form
    99,657,692.20/149,486,538.30 = 45,909,980.20/x
  3. Step 3: Cross multiply
    99,657,692.20x = 149,486,538.30 × 45,909,980.20
  4. Step 4: Simplify right side
    99,657,692.20x = 6,862,924,013,519,543
  5. Step 5: Solve for x
    x = 6,862,924,013,519,543/99,657,692.20
  6. Step 6: Final answer
    x = 68,864,970.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.