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Finding the Fourth Proportional to 123,555.80, 185,333.70 and 73,692.20

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Solution

The fourth proportional to 123,555.80, 185,333.70 and 73,692.20 is: 110,538.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,555.80 : 185,333.70 = 73,692.20 : x
  2. Step 2: Convert to fraction form
    123,555.80/185,333.70 = 73,692.20/x
  3. Step 3: Cross multiply
    123,555.80x = 185,333.70 × 73,692.20
  4. Step 4: Simplify right side
    123,555.80x = 13,657,648,087.14
  5. Step 5: Solve for x
    x = 13,657,648,087.14/123,555.80
  6. Step 6: Final answer
    x = 110,538.30

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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.