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Finding the Fourth Proportional to 159,612.93, 220,265.87 and 87,992.19

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Solution

The fourth proportional to 159,612.93, 220,265.87 and 87,992.19 is: 121,429.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,612.93 : 220,265.87 = 87,992.19 : x
  2. Step 2: Convert to fraction form
    159,612.93/220,265.87 = 87,992.19/x
  3. Step 3: Cross multiply
    159,612.93x = 220,265.87 × 87,992.19
  4. Step 4: Simplify right side
    159,612.93x = 19,381,675,843.59
  5. Step 5: Solve for x
    x = 19,381,675,843.59/159,612.93
  6. Step 6: Final answer
    x = 121,429.23

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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.