Home / 412,126.72-618,278.85-127,811.53

Finding the Fourth Proportional to 412,126.72, 618,278.85 and 127,811.53

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Solution

The fourth proportional to 412,126.72, 618,278.85 and 127,811.53 is: 191,744.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,126.72 : 618,278.85 = 127,811.53 : x
  2. Step 2: Convert to fraction form
    412,126.72/618,278.85 = 127,811.53/x
  3. Step 3: Cross multiply
    412,126.72x = 618,278.85 × 127,811.53
  4. Step 4: Simplify right side
    412,126.72x = 79,023,165,785.14
  5. Step 5: Solve for x
    x = 79,023,165,785.14/412,126.72
  6. Step 6: Final answer
    x = 191,744.82

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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.