Home / 236,949.74-326,990.61-129,520.20

Finding the Fourth Proportional to 236,949.74, 326,990.61 and 129,520.20

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Solution

The fourth proportional to 236,949.74, 326,990.61 and 129,520.20 is: 178,737.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,949.74 : 326,990.61 = 129,520.20 : x
  2. Step 2: Convert to fraction form
    236,949.74/326,990.61 = 129,520.20/x
  3. Step 3: Cross multiply
    236,949.74x = 326,990.61 × 129,520.20
  4. Step 4: Simplify right side
    236,949.74x = 42,351,888,711.65
  5. Step 5: Solve for x
    x = 42,351,888,711.65/236,949.74
  6. Step 6: Final answer
    x = 178,737.86

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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.