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Finding the Fourth Proportional to 138,073.44, 207,110.70 and 42,011.61

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Solution

The fourth proportional to 138,073.44, 207,110.70 and 42,011.61 is: 63,017.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,073.44 : 207,110.70 = 42,011.61 : x
  2. Step 2: Convert to fraction form
    138,073.44/207,110.70 = 42,011.61/x
  3. Step 3: Cross multiply
    138,073.44x = 207,110.70 × 42,011.61
  4. Step 4: Simplify right side
    138,073.44x = 8,701,053,955.23
  5. Step 5: Solve for x
    x = 8,701,053,955.23/138,073.44
  6. Step 6: Final answer
    x = 63,017.58

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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.