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Finding the Fourth Proportional to 121,153.92, 181,740.24 and 36,921.30

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Solution

The fourth proportional to 121,153.92, 181,740.24 and 36,921.30 is: 55,384.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,153.92 : 181,740.24 = 36,921.30 : x
  2. Step 2: Convert to fraction form
    121,153.92/181,740.24 = 36,921.30/x
  3. Step 3: Cross multiply
    121,153.92x = 181,740.24 × 36,921.30
  4. Step 4: Simplify right side
    121,153.92x = 6,710,085,923.11
  5. Step 5: Solve for x
    x = 6,710,085,923.11/121,153.92
  6. Step 6: Final answer
    x = 55,384.80

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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.