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Finding the Fourth Proportional to 99,130.31, 148,843.07 and 40,081.31

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Solution

The fourth proportional to 99,130.31, 148,843.07 and 40,081.31 is: 60,181.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,130.31 : 148,843.07 = 40,081.31 : x
  2. Step 2: Convert to fraction form
    99,130.31/148,843.07 = 40,081.31/x
  3. Step 3: Cross multiply
    99,130.31x = 148,843.07 × 40,081.31
  4. Step 4: Simplify right side
    99,130.31x = 5,965,824,285.40
  5. Step 5: Solve for x
    x = 5,965,824,285.40/99,130.31
  6. Step 6: Final answer
    x = 60,181.64

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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.