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Finding the Fourth Proportional to 138,007.42, 207,011.16 and 44,513.20

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Solution

The fourth proportional to 138,007.42, 207,011.16 and 44,513.20 is: 66,769.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,007.42 : 207,011.16 = 44,513.20 : x
  2. Step 2: Convert to fraction form
    138,007.42/207,011.16 = 44,513.20/x
  3. Step 3: Cross multiply
    138,007.42x = 207,011.16 × 44,513.20
  4. Step 4: Simplify right side
    138,007.42x = 9,214,729,167.31
  5. Step 5: Solve for x
    x = 9,214,729,167.31/138,007.42
  6. Step 6: Final answer
    x = 66,769.81

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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.