Home / 108,487.26-149,686.65-63,137.79

Finding the Fourth Proportional to 108,487.26, 149,686.65 and 63,137.79

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Solution

The fourth proportional to 108,487.26, 149,686.65 and 63,137.79 is: 87,115.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,487.26 : 149,686.65 = 63,137.79 : x
  2. Step 2: Convert to fraction form
    108,487.26/149,686.65 = 63,137.79/x
  3. Step 3: Cross multiply
    108,487.26x = 149,686.65 × 63,137.79
  4. Step 4: Simplify right side
    108,487.26x = 9,450,884,273.50
  5. Step 5: Solve for x
    x = 9,450,884,273.50/108,487.26
  6. Step 6: Final answer
    x = 87,115.15

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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.