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Finding the Fourth Proportional to 159,073.91, 219,522.57 and 87,458.47

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Solution

The fourth proportional to 159,073.91, 219,522.57 and 87,458.47 is: 120,693.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,073.91 : 219,522.57 = 87,458.47 : x
  2. Step 2: Convert to fraction form
    159,073.91/219,522.57 = 87,458.47/x
  3. Step 3: Cross multiply
    159,073.91x = 219,522.57 × 87,458.47
  4. Step 4: Simplify right side
    159,073.91x = 19,199,108,102.67
  5. Step 5: Solve for x
    x = 19,199,108,102.67/159,073.91
  6. Step 6: Final answer
    x = 120,693.00

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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.