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Finding the Fourth Proportional to 121,082.66, 181,624.09 and 57,887.88

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Solution

The fourth proportional to 121,082.66, 181,624.09 and 57,887.88 is: 86,831.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,082.66 : 181,624.09 = 57,887.88 : x
  2. Step 2: Convert to fraction form
    121,082.66/181,624.09 = 57,887.88/x
  3. Step 3: Cross multiply
    121,082.66x = 181,624.09 × 57,887.88
  4. Step 4: Simplify right side
    121,082.66x = 10,513,833,527.03
  5. Step 5: Solve for x
    x = 10,513,833,527.03/121,082.66
  6. Step 6: Final answer
    x = 86,831.87

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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.