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Finding the Fourth Proportional to 159,534.40, 220,157.02 and 87,914.40

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Solution

The fourth proportional to 159,534.40, 220,157.02 and 87,914.40 is: 121,321.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,534.40 : 220,157.02 = 87,914.40 : x
  2. Step 2: Convert to fraction form
    159,534.40/220,157.02 = 87,914.40/x
  3. Step 3: Cross multiply
    159,534.40x = 220,157.02 × 87,914.40
  4. Step 4: Simplify right side
    159,534.40x = 19,354,972,319.09
  5. Step 5: Solve for x
    x = 19,354,972,319.09/159,534.40
  6. Step 6: Final answer
    x = 121,321.62

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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.