Home / 138,329.20-207,493.80-49,585.60

Finding the Fourth Proportional to 138,329.20, 207,493.80 and 49,585.60

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Solution

The fourth proportional to 138,329.20, 207,493.80 and 49,585.60 is: 74,378.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,329.20 : 207,493.80 = 49,585.60 : x
  2. Step 2: Convert to fraction form
    138,329.20/207,493.80 = 49,585.60/x
  3. Step 3: Cross multiply
    138,329.20x = 207,493.80 × 49,585.60
  4. Step 4: Simplify right side
    138,329.20x = 10,288,704,569.28
  5. Step 5: Solve for x
    x = 10,288,704,569.28/138,329.20
  6. Step 6: Final answer
    x = 74,378.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.