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Finding the Fourth Proportional to 99,129.93, 148,842.51 and 40,080.93

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Solution

The fourth proportional to 99,129.93, 148,842.51 and 40,080.93 is: 60,181.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,129.93 : 148,842.51 = 40,080.93 : x
  2. Step 2: Convert to fraction form
    99,129.93/148,842.51 = 40,080.93/x
  3. Step 3: Cross multiply
    99,129.93x = 148,842.51 × 40,080.93
  4. Step 4: Simplify right side
    99,129.93x = 5,965,745,515.87
  5. Step 5: Solve for x
    x = 5,965,745,515.87/99,129.93
  6. Step 6: Final answer
    x = 60,181.07

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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.