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Finding the Fourth Proportional to 159,318.54, 219,867.48 and 87,697.80

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Solution

The fourth proportional to 159,318.54, 219,867.48 and 87,697.80 is: 121,027.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,318.54 : 219,867.48 = 87,697.80 : x
  2. Step 2: Convert to fraction form
    159,318.54/219,867.48 = 87,697.80/x
  3. Step 3: Cross multiply
    159,318.54x = 219,867.48 × 87,697.80
  4. Step 4: Simplify right side
    159,318.54x = 19,281,894,287.54
  5. Step 5: Solve for x
    x = 19,281,894,287.54/159,318.54
  6. Step 6: Final answer
    x = 121,027.31

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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.