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Finding the Fourth Proportional to 159,223.47, 219,730.14 and 86,626.78

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Solution

The fourth proportional to 159,223.47, 219,730.14 and 86,626.78 is: 119,545.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,223.47 : 219,730.14 = 86,626.78 : x
  2. Step 2: Convert to fraction form
    159,223.47/219,730.14 = 86,626.78/x
  3. Step 3: Cross multiply
    159,223.47x = 219,730.14 × 86,626.78
  4. Step 4: Simplify right side
    159,223.47x = 19,034,513,947.82
  5. Step 5: Solve for x
    x = 19,034,513,947.82/159,223.47
  6. Step 6: Final answer
    x = 119,545.91

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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.