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Finding the Fourth Proportional to 159,436.52, 220,014.07 and 99,005.86

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Solution

The fourth proportional to 159,436.52, 220,014.07 and 99,005.86 is: 136,622.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,436.52 : 220,014.07 = 99,005.86 : x
  2. Step 2: Convert to fraction form
    159,436.52/220,014.07 = 99,005.86/x
  3. Step 3: Cross multiply
    159,436.52x = 220,014.07 × 99,005.86
  4. Step 4: Simplify right side
    159,436.52x = 21,782,680,617.35
  5. Step 5: Solve for x
    x = 21,782,680,617.35/159,436.52
  6. Step 6: Final answer
    x = 136,622.91

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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.