Home / 121,404.70-182,107.05-77,227.30

Finding the Fourth Proportional to 121,404.70, 182,107.05 and 77,227.30

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Solution

The fourth proportional to 121,404.70, 182,107.05 and 77,227.30 is: 115,840.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,404.70 : 182,107.05 = 77,227.30 : x
  2. Step 2: Convert to fraction form
    121,404.70/182,107.05 = 77,227.30/x
  3. Step 3: Cross multiply
    121,404.70x = 182,107.05 × 77,227.30
  4. Step 4: Simplify right side
    121,404.70x = 14,063,635,782.47
  5. Step 5: Solve for x
    x = 14,063,635,782.47/121,404.70
  6. Step 6: Final answer
    x = 115,840.95

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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.