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Finding the Fourth Proportional to 99,540, 149,312.88 and 25,668

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Solution

The fourth proportional to 99,540, 149,312.88 and 25,668 is: 38,502.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,540 : 149,312.88 = 25,668 : x
  2. Step 2: Convert to fraction form
    99,540/149,312.88 = 25,668/x
  3. Step 3: Cross multiply
    99,540x = 149,312.88 × 25,668
  4. Step 4: Simplify right side
    99,540x = 3,832,563,003.84
  5. Step 5: Solve for x
    x = 3,832,563,003.84/99,540
  6. Step 6: Final answer
    x = 38,502.74

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.