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Finding the Fourth Proportional to 138,101.96, 207,155.70 and 43,330.14

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Solution

The fourth proportional to 138,101.96, 207,155.70 and 43,330.14 is: 64,996.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,101.96 : 207,155.70 = 43,330.14 : x
  2. Step 2: Convert to fraction form
    138,101.96/207,155.70 = 43,330.14/x
  3. Step 3: Cross multiply
    138,101.96x = 207,155.70 × 43,330.14
  4. Step 4: Simplify right side
    138,101.96x = 8,976,085,482.80
  5. Step 5: Solve for x
    x = 8,976,085,482.80/138,101.96
  6. Step 6: Final answer
    x = 64,996.08

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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.