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Finding the Fourth Proportional to 126,871.88, 190,310.90 and 42,633.26

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Solution

The fourth proportional to 126,871.88, 190,310.90 and 42,633.26 is: 63,950.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,871.88 : 190,310.90 = 42,633.26 : x
  2. Step 2: Convert to fraction form
    126,871.88/190,310.90 = 42,633.26/x
  3. Step 3: Cross multiply
    126,871.88x = 190,310.90 × 42,633.26
  4. Step 4: Simplify right side
    126,871.88x = 8,113,572,915.81
  5. Step 5: Solve for x
    x = 8,113,572,915.81/126,871.88
  6. Step 6: Final answer
    x = 63,950.92

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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.