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Finding the Fourth Proportional to 159,137.87, 219,612.93 and 91,160.78

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Solution

The fourth proportional to 159,137.87, 219,612.93 and 91,160.78 is: 125,803.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,137.87 : 219,612.93 = 91,160.78 : x
  2. Step 2: Convert to fraction form
    159,137.87/219,612.93 = 91,160.78/x
  3. Step 3: Cross multiply
    159,137.87x = 219,612.93 × 91,160.78
  4. Step 4: Simplify right side
    159,137.87x = 20,020,086,545.92
  5. Step 5: Solve for x
    x = 20,020,086,545.92/159,137.87
  6. Step 6: Final answer
    x = 125,803.41

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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.