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Finding the Fourth Proportional to 159,379.13, 219,943.20 and 87,758.97

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Solution

The fourth proportional to 159,379.13, 219,943.20 and 87,758.97 is: 121,107.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,379.13 : 219,943.20 = 87,758.97 : x
  2. Step 2: Convert to fraction form
    159,379.13/219,943.20 = 87,758.97/x
  3. Step 3: Cross multiply
    159,379.13x = 219,943.20 × 87,758.97
  4. Step 4: Simplify right side
    159,379.13x = 19,301,988,690.50
  5. Step 5: Solve for x
    x = 19,301,988,690.50/159,379.13
  6. Step 6: Final answer
    x = 121,107.38

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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.