Home / 126,909.40-190,230.14-42,589.61

Finding the Fourth Proportional to 126,909.40, 190,230.14 and 42,589.61

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Solution

The fourth proportional to 126,909.40, 190,230.14 and 42,589.61 is: 63,839.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,909.40 : 190,230.14 = 42,589.61 : x
  2. Step 2: Convert to fraction form
    126,909.40/190,230.14 = 42,589.61/x
  3. Step 3: Cross multiply
    126,909.40x = 190,230.14 × 42,589.61
  4. Step 4: Simplify right side
    126,909.40x = 8,101,827,259.90
  5. Step 5: Solve for x
    x = 8,101,827,259.90/126,909.40
  6. Step 6: Final answer
    x = 63,839.46

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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.