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Finding the Fourth Proportional to 99,134.68, 148,849.68 and 40,085.68

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Solution

The fourth proportional to 99,134.68, 148,849.68 and 40,085.68 is: 60,188.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,134.68 : 148,849.68 = 40,085.68 : x
  2. Step 2: Convert to fraction form
    99,134.68/148,849.68 = 40,085.68/x
  3. Step 3: Cross multiply
    99,134.68x = 148,849.68 × 40,085.68
  4. Step 4: Simplify right side
    99,134.68x = 5,966,740,640.58
  5. Step 5: Solve for x
    x = 5,966,740,640.58/99,134.68
  6. Step 6: Final answer
    x = 60,188.23

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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.