Home / 412,106.09-618,247.55-127,790.53

Finding the Fourth Proportional to 412,106.09, 618,247.55 and 127,790.53

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Solution

The fourth proportional to 412,106.09, 618,247.55 and 127,790.53 is: 191,713.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,106.09 : 618,247.55 = 127,790.53 : x
  2. Step 2: Convert to fraction form
    412,106.09/618,247.55 = 127,790.53/x
  3. Step 3: Cross multiply
    412,106.09x = 618,247.55 × 127,790.53
  4. Step 4: Simplify right side
    412,106.09x = 79,006,182,085.70
  5. Step 5: Solve for x
    x = 79,006,182,085.70/412,106.09
  6. Step 6: Final answer
    x = 191,713.21

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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.