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Finding the Fourth Proportional to 108,317.80, 162,303.90 and 90,692.20

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Solution

The fourth proportional to 108,317.80, 162,303.90 and 90,692.20 is: 135,893.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,317.80 : 162,303.90 = 90,692.20 : x
  2. Step 2: Convert to fraction form
    108,317.80/162,303.90 = 90,692.20/x
  3. Step 3: Cross multiply
    108,317.80x = 162,303.90 × 90,692.20
  4. Step 4: Simplify right side
    108,317.80x = 14,719,697,759.58
  5. Step 5: Solve for x
    x = 14,719,697,759.58/108,317.80
  6. Step 6: Final answer
    x = 135,893.62

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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.