Home / 126,987.12-175,242.24-70,398

Finding the Fourth Proportional to 126,987.12, 175,242.24 and 70,398

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Solution

The fourth proportional to 126,987.12, 175,242.24 and 70,398 is: 97,149.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,987.12 : 175,242.24 = 70,398 : x
  2. Step 2: Convert to fraction form
    126,987.12/175,242.24 = 70,398/x
  3. Step 3: Cross multiply
    126,987.12x = 175,242.24 × 70,398
  4. Step 4: Simplify right side
    126,987.12x = 12,336,703,211.52
  5. Step 5: Solve for x
    x = 12,336,703,211.52/126,987.12
  6. Step 6: Final answer
    x = 97,149.25

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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.