Home / 126,642.90-174,751.98-72,945.38

Finding the Fourth Proportional to 126,642.90, 174,751.98 and 72,945.38

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Solution

The fourth proportional to 126,642.90, 174,751.98 and 72,945.38 is: 100,655.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,642.90 : 174,751.98 = 72,945.38 : x
  2. Step 2: Convert to fraction form
    126,642.90/174,751.98 = 72,945.38/x
  3. Step 3: Cross multiply
    126,642.90x = 174,751.98 × 72,945.38
  4. Step 4: Simplify right side
    126,642.90x = 12,747,349,586.85
  5. Step 5: Solve for x
    x = 12,747,349,586.85/126,642.90
  6. Step 6: Final answer
    x = 100,655.86

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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.