Home / 91,726.20-137,419.20-52,165.80

Finding the Fourth Proportional to 91,726.20, 137,419.20 and 52,165.80

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Solution

The fourth proportional to 91,726.20, 137,419.20 and 52,165.80 is: 78,151.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,726.20 : 137,419.20 = 52,165.80 : x
  2. Step 2: Convert to fraction form
    91,726.20/137,419.20 = 52,165.80/x
  3. Step 3: Cross multiply
    91,726.20x = 137,419.20 × 52,165.80
  4. Step 4: Simplify right side
    91,726.20x = 7,168,582,503.36
  5. Step 5: Solve for x
    x = 7,168,582,503.36/91,726.20
  6. Step 6: Final answer
    x = 78,151.96

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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.