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Finding the Fourth Proportional to 124,990.49, 187,512.37 and 71,706.97

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Solution

The fourth proportional to 124,990.49, 187,512.37 and 71,706.97 is: 107,575.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,990.49 : 187,512.37 = 71,706.97 : x
  2. Step 2: Convert to fraction form
    124,990.49/187,512.37 = 71,706.97/x
  3. Step 3: Cross multiply
    124,990.49x = 187,512.37 × 71,706.97
  4. Step 4: Simplify right side
    124,990.49x = 13,445,943,945.34
  5. Step 5: Solve for x
    x = 13,445,943,945.34/124,990.49
  6. Step 6: Final answer
    x = 107,575.73

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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.