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Finding the Fourth Proportional to 126,937.78, 190,422.87 and 42,661.78

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Solution

The fourth proportional to 126,937.78, 190,422.87 and 42,661.78 is: 63,998.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,937.78 : 190,422.87 = 42,661.78 : x
  2. Step 2: Convert to fraction form
    126,937.78/190,422.87 = 42,661.78/x
  3. Step 3: Cross multiply
    126,937.78x = 190,422.87 × 42,661.78
  4. Step 4: Simplify right side
    126,937.78x = 8,123,778,586.91
  5. Step 5: Solve for x
    x = 8,123,778,586.91/126,937.78
  6. Step 6: Final answer
    x = 63,998.11

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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.