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Finding the Fourth Proportional to 159,149.19, 219,627.45 and 87,529.71

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Solution

The fourth proportional to 159,149.19, 219,627.45 and 87,529.71 is: 120,791.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,149.19 : 219,627.45 = 87,529.71 : x
  2. Step 2: Convert to fraction form
    159,149.19/219,627.45 = 87,529.71/x
  3. Step 3: Cross multiply
    159,149.19x = 219,627.45 × 87,529.71
  4. Step 4: Simplify right side
    159,149.19x = 19,223,927,006.54
  5. Step 5: Solve for x
    x = 19,223,927,006.54/159,149.19
  6. Step 6: Final answer
    x = 120,791.86

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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.