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Finding the Fourth Proportional to 108,656.17, 162,951.12 and 75,137.68

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Solution

The fourth proportional to 108,656.17, 162,951.12 and 75,137.68 is: 112,683.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,656.17 : 162,951.12 = 75,137.68 : x
  2. Step 2: Convert to fraction form
    108,656.17/162,951.12 = 75,137.68/x
  3. Step 3: Cross multiply
    108,656.17x = 162,951.12 × 75,137.68
  4. Step 4: Simplify right side
    108,656.17x = 12,243,769,110.20
  5. Step 5: Solve for x
    x = 12,243,769,110.20/108,656.17
  6. Step 6: Final answer
    x = 112,683.61

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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.