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Finding the Fourth Proportional to 159,141.76, 219,614.04 and 87,522.64

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Solution

The fourth proportional to 159,141.76, 219,614.04 and 87,522.64 is: 120,780.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,141.76 : 219,614.04 = 87,522.64 : x
  2. Step 2: Convert to fraction form
    159,141.76/219,614.04 = 87,522.64/x
  3. Step 3: Cross multiply
    159,141.76x = 219,614.04 × 87,522.64
  4. Step 4: Simplify right side
    159,141.76x = 19,221,200,561.87
  5. Step 5: Solve for x
    x = 19,221,200,561.87/159,141.76
  6. Step 6: Final answer
    x = 120,780.37

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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.