Home / 121,180.15-181,853.28-42,294.38

Finding the Fourth Proportional to 121,180.15, 181,853.28 and 42,294.38

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Solution

The fourth proportional to 121,180.15, 181,853.28 and 42,294.38 is: 63,470.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,180.15 : 181,853.28 = 42,294.38 : x
  2. Step 2: Convert to fraction form
    121,180.15/181,853.28 = 42,294.38/x
  3. Step 3: Cross multiply
    121,180.15x = 181,853.28 × 42,294.38
  4. Step 4: Simplify right side
    121,180.15x = 7,691,371,211.81
  5. Step 5: Solve for x
    x = 7,691,371,211.81/121,180.15
  6. Step 6: Final answer
    x = 63,470.55

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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.