Home / 124,839.45-172,267.43-71,122.41

Finding the Fourth Proportional to 124,839.45, 172,267.43 and 71,122.41

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Solution

The fourth proportional to 124,839.45, 172,267.43 and 71,122.41 is: 98,142.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,839.45 : 172,267.43 = 71,122.41 : x
  2. Step 2: Convert to fraction form
    124,839.45/172,267.43 = 71,122.41/x
  3. Step 3: Cross multiply
    124,839.45x = 172,267.43 × 71,122.41
  4. Step 4: Simplify right side
    124,839.45x = 12,252,074,430.49
  5. Step 5: Solve for x
    x = 12,252,074,430.49/124,839.45
  6. Step 6: Final answer
    x = 98,142.65

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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.