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Finding the Fourth Proportional to 99,260, 148,891.08 and 25,388

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Solution

The fourth proportional to 99,260, 148,891.08 and 25,388 is: 38,082.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,260 : 148,891.08 = 25,388 : x
  2. Step 2: Convert to fraction form
    99,260/148,891.08 = 25,388/x
  3. Step 3: Cross multiply
    99,260x = 148,891.08 × 25,388
  4. Step 4: Simplify right side
    99,260x = 3,780,046,739.04
  5. Step 5: Solve for x
    x = 3,780,046,739.04/99,260
  6. Step 6: Final answer
    x = 38,082.28

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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.