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Finding the Fourth Proportional to 162,487.68, 224,253.88 and 90,871.68

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Solution

The fourth proportional to 162,487.68, 224,253.88 and 90,871.68 is: 125,414.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,487.68 : 224,253.88 = 90,871.68 : x
  2. Step 2: Convert to fraction form
    162,487.68/224,253.88 = 90,871.68/x
  3. Step 3: Cross multiply
    162,487.68x = 224,253.88 × 90,871.68
  4. Step 4: Simplify right side
    162,487.68x = 20,378,326,822.12
  5. Step 5: Solve for x
    x = 20,378,326,822.12/162,487.68
  6. Step 6: Final answer
    x = 125,414.60

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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.