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Finding the Fourth Proportional to 99,271.20, 148,892.40 and 29,143.20

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Solution

The fourth proportional to 99,271.20, 148,892.40 and 29,143.20 is: 43,710.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,271.20 : 148,892.40 = 29,143.20 : x
  2. Step 2: Convert to fraction form
    99,271.20/148,892.40 = 29,143.20/x
  3. Step 3: Cross multiply
    99,271.20x = 148,892.40 × 29,143.20
  4. Step 4: Simplify right side
    99,271.20x = 4,339,200,991.68
  5. Step 5: Solve for x
    x = 4,339,200,991.68/99,271.20
  6. Step 6: Final answer
    x = 43,710.57

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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.