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Finding the Fourth Proportional to 159,429.62, 220,022.86 and 87,809.62

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Solution

The fourth proportional to 159,429.62, 220,022.86 and 87,809.62 is: 121,182.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,429.62 : 220,022.86 = 87,809.62 : x
  2. Step 2: Convert to fraction form
    159,429.62/220,022.86 = 87,809.62/x
  3. Step 3: Cross multiply
    159,429.62x = 220,022.86 × 87,809.62
  4. Step 4: Simplify right side
    159,429.62x = 19,320,123,727.91
  5. Step 5: Solve for x
    x = 19,320,123,727.91/159,429.62
  6. Step 6: Final answer
    x = 121,182.77

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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.