Home / 108,143.38-149,227.60-62,820.12

Finding the Fourth Proportional to 108,143.38, 149,227.60 and 62,820.12

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Solution

The fourth proportional to 108,143.38, 149,227.60 and 62,820.12 is: 86,685.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,143.38 : 149,227.60 = 62,820.12 : x
  2. Step 2: Convert to fraction form
    108,143.38/149,227.60 = 62,820.12/x
  3. Step 3: Cross multiply
    108,143.38x = 149,227.60 × 62,820.12
  4. Step 4: Simplify right side
    108,143.38x = 9,374,495,739.31
  5. Step 5: Solve for x
    x = 9,374,495,739.31/108,143.38
  6. Step 6: Final answer
    x = 86,685.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.