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Finding the Fourth Proportional to 159,279.30, 219,809.85 and 86,682.86

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Solution

The fourth proportional to 159,279.30, 219,809.85 and 86,682.86 is: 119,624.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,279.30 : 219,809.85 = 86,682.86 : x
  2. Step 2: Convert to fraction form
    159,279.30/219,809.85 = 86,682.86/x
  3. Step 3: Cross multiply
    159,279.30x = 219,809.85 × 86,682.86
  4. Step 4: Simplify right side
    159,279.30x = 19,053,746,805.60
  5. Step 5: Solve for x
    x = 19,053,746,805.60/159,279.30
  6. Step 6: Final answer
    x = 119,624.75

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1.5x scale

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.