Home / 126,908.90-190,229.38-42,589.10

Finding the Fourth Proportional to 126,908.90, 190,229.38 and 42,589.10

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Solution

The fourth proportional to 126,908.90, 190,229.38 and 42,589.10 is: 63,838.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,908.90 : 190,229.38 = 42,589.10 : x
  2. Step 2: Convert to fraction form
    126,908.90/190,229.38 = 42,589.10/x
  3. Step 3: Cross multiply
    126,908.90x = 190,229.38 × 42,589.10
  4. Step 4: Simplify right side
    126,908.90x = 8,101,698,087.76
  5. Step 5: Solve for x
    x = 8,101,698,087.76/126,908.90
  6. Step 6: Final answer
    x = 63,838.69

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1.5x scale

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.