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Finding the Fourth Proportional to 99,259, 148,889.58 and 25,387

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Solution

The fourth proportional to 99,259, 148,889.58 and 25,387 is: 38,080.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,259 : 148,889.58 = 25,387 : x
  2. Step 2: Convert to fraction form
    99,259/148,889.58 = 25,387/x
  3. Step 3: Cross multiply
    99,259x = 148,889.58 × 25,387
  4. Step 4: Simplify right side
    99,259x = 3,779,859,767.46
  5. Step 5: Solve for x
    x = 3,779,859,767.46/99,259
  6. Step 6: Final answer
    x = 38,080.78

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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.