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Finding the Fourth Proportional to 159,279.68, 219,714.54 and 99,560

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Solution

The fourth proportional to 159,279.68, 219,714.54 and 99,560 is: 137,335.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,279.68 : 219,714.54 = 99,560 : x
  2. Step 2: Convert to fraction form
    159,279.68/219,714.54 = 99,560/x
  3. Step 3: Cross multiply
    159,279.68x = 219,714.54 × 99,560
  4. Step 4: Simplify right side
    159,279.68x = 21,874,779,602.40
  5. Step 5: Solve for x
    x = 21,874,779,602.40/159,279.68
  6. Step 6: Final answer
    x = 137,335.66

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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.