Home / 126,720.76-190,123.32-42,489.22

Finding the Fourth Proportional to 126,720.76, 190,123.32 and 42,489.22

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Solution

The fourth proportional to 126,720.76, 190,123.32 and 42,489.22 is: 63,747.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,720.76 : 190,123.32 = 42,489.22 : x
  2. Step 2: Convert to fraction form
    126,720.76/190,123.32 = 42,489.22/x
  3. Step 3: Cross multiply
    126,720.76x = 190,123.32 × 42,489.22
  4. Step 4: Simplify right side
    126,720.76x = 8,078,191,570.61
  5. Step 5: Solve for x
    x = 8,078,191,570.61/126,720.76
  6. Step 6: Final answer
    x = 63,747.97

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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.