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Finding the Fourth Proportional to 121,157.92, 181,765.62 and 38,051.92

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Solution

The fourth proportional to 121,157.92, 181,765.62 and 38,051.92 is: 57,086.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,157.92 : 181,765.62 = 38,051.92 : x
  2. Step 2: Convert to fraction form
    121,157.92/181,765.62 = 38,051.92/x
  3. Step 3: Cross multiply
    121,157.92x = 181,765.62 × 38,051.92
  4. Step 4: Simplify right side
    121,157.92x = 6,916,530,830.99
  5. Step 5: Solve for x
    x = 6,916,530,830.99/121,157.92
  6. Step 6: Final answer
    x = 57,086.91

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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.