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Finding the Fourth Proportional to 159,062.14, 219,509.96 and 86,469.92

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Solution

The fourth proportional to 159,062.14, 219,509.96 and 86,469.92 is: 119,330.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,062.14 : 219,509.96 = 86,469.92 : x
  2. Step 2: Convert to fraction form
    159,062.14/219,509.96 = 86,469.92/x
  3. Step 3: Cross multiply
    159,062.14x = 219,509.96 × 86,469.92
  4. Step 4: Simplify right side
    159,062.14x = 18,981,007,150.50
  5. Step 5: Solve for x
    x = 18,981,007,150.50/159,062.14
  6. Step 6: Final answer
    x = 119,330.77

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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.