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Finding the Fourth Proportional to 121,369.92, 181,931.68 and 46,470.88

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Solution

The fourth proportional to 121,369.92, 181,931.68 and 46,470.88 is: 69,659.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,369.92 : 181,931.68 = 46,470.88 : x
  2. Step 2: Convert to fraction form
    121,369.92/181,931.68 = 46,470.88/x
  3. Step 3: Cross multiply
    121,369.92x = 181,931.68 × 46,470.88
  4. Step 4: Simplify right side
    121,369.92x = 8,454,525,269.48
  5. Step 5: Solve for x
    x = 8,454,525,269.48/121,369.92
  6. Step 6: Final answer
    x = 69,659.15

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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.