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Finding the Fourth Proportional to 159,079.61, 219,531.33 and 87,460.13

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Solution

The fourth proportional to 159,079.61, 219,531.33 and 87,460.13 is: 120,695.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,079.61 : 219,531.33 = 87,460.13 : x
  2. Step 2: Convert to fraction form
    159,079.61/219,531.33 = 87,460.13/x
  3. Step 3: Cross multiply
    159,079.61x = 219,531.33 × 87,460.13
  4. Step 4: Simplify right side
    159,079.61x = 19,200,237,563.22
  5. Step 5: Solve for x
    x = 19,200,237,563.22/159,079.61
  6. Step 6: Final answer
    x = 120,695.78

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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.