Home / 108,935.10-163,402.65-86,627.70

Finding the Fourth Proportional to 108,935.10, 163,402.65 and 86,627.70

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Solution

The fourth proportional to 108,935.10, 163,402.65 and 86,627.70 is: 129,941.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,935.10 : 163,402.65 = 86,627.70 : x
  2. Step 2: Convert to fraction form
    108,935.10/163,402.65 = 86,627.70/x
  3. Step 3: Cross multiply
    108,935.10x = 163,402.65 × 86,627.70
  4. Step 4: Simplify right side
    108,935.10x = 14,155,195,743.41
  5. Step 5: Solve for x
    x = 14,155,195,743.41/108,935.10
  6. Step 6: Final answer
    x = 129,941.55

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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.