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Finding the Fourth Proportional to 108,657.17, 162,952.62 and 75,138.68

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Solution

The fourth proportional to 108,657.17, 162,952.62 and 75,138.68 is: 112,685.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,657.17 : 162,952.62 = 75,138.68 : x
  2. Step 2: Convert to fraction form
    108,657.17/162,952.62 = 75,138.68/x
  3. Step 3: Cross multiply
    108,657.17x = 162,952.62 × 75,138.68
  4. Step 4: Simplify right side
    108,657.17x = 12,244,044,769.34
  5. Step 5: Solve for x
    x = 12,244,044,769.34/108,657.17
  6. Step 6: Final answer
    x = 112,685.11

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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.