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Finding the Fourth Proportional to 138,066.59, 207,102.46 and 43,294.69

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Solution

The fourth proportional to 138,066.59, 207,102.46 and 43,294.69 is: 64,942.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,066.59 : 207,102.46 = 43,294.69 : x
  2. Step 2: Convert to fraction form
    138,066.59/207,102.46 = 43,294.69/x
  3. Step 3: Cross multiply
    138,066.59x = 207,102.46 × 43,294.69
  4. Step 4: Simplify right side
    138,066.59x = 8,966,436,803.94
  5. Step 5: Solve for x
    x = 8,966,436,803.94/138,066.59
  6. Step 6: Final answer
    x = 64,942.84

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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.