Home / 139,959,351.12-193,143,987.56-78,079,689.52

Finding the Fourth Proportional to 139,959,351.12, 193,143,987.56 and 78,079,689.52

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Solution

The fourth proportional to 139,959,351.12, 193,143,987.56 and 78,079,689.52 is: 107,750,017.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,959,351.12 : 193,143,987.56 = 78,079,689.52 : x
  2. Step 2: Convert to fraction form
    139,959,351.12/193,143,987.56 = 78,079,689.52/x
  3. Step 3: Cross multiply
    139,959,351.12x = 193,143,987.56 × 78,079,689.52
  4. Step 4: Simplify right side
    139,959,351.12x = 15,080,622,581,339,542
  5. Step 5: Solve for x
    x = 15,080,622,581,339,542/139,959,351.12
  6. Step 6: Final answer
    x = 107,750,017.85

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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.