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Finding the Fourth Proportional to 159,274.88, 219,799.35 and 87,654.90

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Solution

The fourth proportional to 159,274.88, 219,799.35 and 87,654.90 is: 120,963.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,274.88 : 219,799.35 = 87,654.90 : x
  2. Step 2: Convert to fraction form
    159,274.88/219,799.35 = 87,654.90/x
  3. Step 3: Cross multiply
    159,274.88x = 219,799.35 × 87,654.90
  4. Step 4: Simplify right side
    159,274.88x = 19,266,490,044.32
  5. Step 5: Solve for x
    x = 19,266,490,044.32/159,274.88
  6. Step 6: Final answer
    x = 120,963.77

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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.