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Finding the Fourth Proportional to 138,237.45, 207,370.89 and 38,397.84

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Solution

The fourth proportional to 138,237.45, 207,370.89 and 38,397.84 is: 57,600.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,237.45 : 207,370.89 = 38,397.84 : x
  2. Step 2: Convert to fraction form
    138,237.45/207,370.89 = 38,397.84/x
  3. Step 3: Cross multiply
    138,237.45x = 207,370.89 × 38,397.84
  4. Step 4: Simplify right side
    138,237.45x = 7,962,594,254.88
  5. Step 5: Solve for x
    x = 7,962,594,254.88/138,237.45
  6. Step 6: Final answer
    x = 57,600.85

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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.