Home / 511,719.12-767,585.16-137,742.12

Finding the Fourth Proportional to 511,719.12, 767,585.16 and 137,742.12

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Solution

The fourth proportional to 511,719.12, 767,585.16 and 137,742.12 is: 206,614.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,719.12 : 767,585.16 = 137,742.12 : x
  2. Step 2: Convert to fraction form
    511,719.12/767,585.16 = 137,742.12/x
  3. Step 3: Cross multiply
    511,719.12x = 767,585.16 × 137,742.12
  4. Step 4: Simplify right side
    511,719.12x = 105,728,807,218.94
  5. Step 5: Solve for x
    x = 105,728,807,218.94/511,719.12
  6. Step 6: Final answer
    x = 206,614.92

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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.