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Finding the Fourth Proportional to 121,082.89, 181,624.48 and 57,888.15

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Solution

The fourth proportional to 121,082.89, 181,624.48 and 57,888.15 is: 86,832.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,082.89 : 181,624.48 = 57,888.15 : x
  2. Step 2: Convert to fraction form
    121,082.89/181,624.48 = 57,888.15/x
  3. Step 3: Cross multiply
    121,082.89x = 181,624.48 × 57,888.15
  4. Step 4: Simplify right side
    121,082.89x = 10,513,905,141.91
  5. Step 5: Solve for x
    x = 10,513,905,141.91/121,082.89
  6. Step 6: Final answer
    x = 86,832.29

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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.