Home / 239,119.60-329,972.40-137,139.79

Finding the Fourth Proportional to 239,119.60, 329,972.40 and 137,139.79

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Solution

The fourth proportional to 239,119.60, 329,972.40 and 137,139.79 is: 189,245.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,119.60 : 329,972.40 = 137,139.79 : x
  2. Step 2: Convert to fraction form
    239,119.60/329,972.40 = 137,139.79/x
  3. Step 3: Cross multiply
    239,119.60x = 329,972.40 × 137,139.79
  4. Step 4: Simplify right side
    239,119.60x = 45,252,345,641.80
  5. Step 5: Solve for x
    x = 45,252,345,641.80/239,119.60
  6. Step 6: Final answer
    x = 189,245.66

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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.