Home / 121,253.76-181,854.72-38,129.28

Finding the Fourth Proportional to 121,253.76, 181,854.72 and 38,129.28

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Solution

The fourth proportional to 121,253.76, 181,854.72 and 38,129.28 is: 57,185.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,253.76 : 181,854.72 = 38,129.28 : x
  2. Step 2: Convert to fraction form
    121,253.76/181,854.72 = 38,129.28/x
  3. Step 3: Cross multiply
    121,253.76x = 181,854.72 × 38,129.28
  4. Step 4: Simplify right side
    121,253.76x = 6,933,989,538.20
  5. Step 5: Solve for x
    x = 6,933,989,538.20/121,253.76
  6. Step 6: Final answer
    x = 57,185.77

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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.