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Finding the Fourth Proportional to 159,066.52, 219,503.36 and 87,432.76

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Solution

The fourth proportional to 159,066.52, 219,503.36 and 87,432.76 is: 120,652.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,066.52 : 219,503.36 = 87,432.76 : x
  2. Step 2: Convert to fraction form
    159,066.52/219,503.36 = 87,432.76/x
  3. Step 3: Cross multiply
    159,066.52x = 219,503.36 × 87,432.76
  4. Step 4: Simplify right side
    159,066.52x = 19,191,784,594.07
  5. Step 5: Solve for x
    x = 19,191,784,594.07/159,066.52
  6. Step 6: Final answer
    x = 120,652.57

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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.