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Finding the Fourth Proportional to 159,470.34, 220,079.03 and 87,850.35

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Solution

The fourth proportional to 159,470.34, 220,079.03 and 87,850.35 is: 121,238.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,470.34 : 220,079.03 = 87,850.35 : x
  2. Step 2: Convert to fraction form
    159,470.34/220,079.03 = 87,850.35/x
  3. Step 3: Cross multiply
    159,470.34x = 220,079.03 × 87,850.35
  4. Step 4: Simplify right side
    159,470.34x = 19,334,019,373.91
  5. Step 5: Solve for x
    x = 19,334,019,373.91/159,470.34
  6. Step 6: Final answer
    x = 121,238.97

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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.