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Finding the Fourth Proportional to 159,577.56, 220,215.92 and 87,957.64

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Solution

The fourth proportional to 159,577.56, 220,215.92 and 87,957.64 is: 121,380.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,577.56 : 220,215.92 = 87,957.64 : x
  2. Step 2: Convert to fraction form
    159,577.56/220,215.92 = 87,957.64/x
  3. Step 3: Cross multiply
    159,577.56x = 220,215.92 × 87,957.64
  4. Step 4: Simplify right side
    159,577.56x = 19,369,672,613.63
  5. Step 5: Solve for x
    x = 19,369,672,613.63/159,577.56
  6. Step 6: Final answer
    x = 121,380.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.