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Finding the Fourth Proportional to 126,658, 190,041.72 and 67,476.88

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Solution

The fourth proportional to 126,658, 190,041.72 and 67,476.88 is: 101,244.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,658 : 190,041.72 = 67,476.88 : x
  2. Step 2: Convert to fraction form
    126,658/190,041.72 = 67,476.88/x
  3. Step 3: Cross multiply
    126,658x = 190,041.72 × 67,476.88
  4. Step 4: Simplify right side
    126,658x = 12,823,422,335.43
  5. Step 5: Solve for x
    x = 12,823,422,335.43/126,658
  6. Step 6: Final answer
    x = 101,244.47

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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.