Home / 245,110.11-338,252.13-137,680.20

Finding the Fourth Proportional to 245,110.11, 338,252.13 and 137,680.20

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Solution

The fourth proportional to 245,110.11, 338,252.13 and 137,680.20 is: 189,998.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,110.11 : 338,252.13 = 137,680.20 : x
  2. Step 2: Convert to fraction form
    245,110.11/338,252.13 = 137,680.20/x
  3. Step 3: Cross multiply
    245,110.11x = 338,252.13 × 137,680.20
  4. Step 4: Simplify right side
    245,110.11x = 46,570,620,908.83
  5. Step 5: Solve for x
    x = 46,570,620,908.83/245,110.11
  6. Step 6: Final answer
    x = 189,998.78

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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.