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Finding the Fourth Proportional to 138,065.59, 207,100.96 and 43,293.69

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Solution

The fourth proportional to 138,065.59, 207,100.96 and 43,293.69 is: 64,941.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,065.59 : 207,100.96 = 43,293.69 : x
  2. Step 2: Convert to fraction form
    138,065.59/207,100.96 = 43,293.69/x
  3. Step 3: Cross multiply
    138,065.59x = 207,100.96 × 43,293.69
  4. Step 4: Simplify right side
    138,065.59x = 8,966,164,652.71
  5. Step 5: Solve for x
    x = 8,966,164,652.71/138,065.59
  6. Step 6: Final answer
    x = 64,941.34

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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.