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Finding the Fourth Proportional to 92,614.10, 138,867.51 and 81,543.02

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Solution

The fourth proportional to 92,614.10, 138,867.51 and 81,543.02 is: 122,267.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,614.10 : 138,867.51 = 81,543.02 : x
  2. Step 2: Convert to fraction form
    92,614.10/138,867.51 = 81,543.02/x
  3. Step 3: Cross multiply
    92,614.10x = 138,867.51 × 81,543.02
  4. Step 4: Simplify right side
    92,614.10x = 11,323,676,145.28
  5. Step 5: Solve for x
    x = 11,323,676,145.28/92,614.10
  6. Step 6: Final answer
    x = 122,267.30

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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.