Home / 121,154.56-181,781.76-53,651.20

Finding the Fourth Proportional to 121,154.56, 181,781.76 and 53,651.20

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Solution

The fourth proportional to 121,154.56, 181,781.76 and 53,651.20 is: 80,498.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,154.56 : 181,781.76 = 53,651.20 : x
  2. Step 2: Convert to fraction form
    121,154.56/181,781.76 = 53,651.20/x
  3. Step 3: Cross multiply
    121,154.56x = 181,781.76 × 53,651.20
  4. Step 4: Simplify right side
    121,154.56x = 9,752,809,562.11
  5. Step 5: Solve for x
    x = 9,752,809,562.11/121,154.56
  6. Step 6: Final answer
    x = 80,498.91

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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.