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Finding the Fourth Proportional to 99,358.76, 149,039.22 and 29,239.40

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Solution

The fourth proportional to 99,358.76, 149,039.22 and 29,239.40 is: 43,859.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,358.76 : 149,039.22 = 29,239.40 : x
  2. Step 2: Convert to fraction form
    99,358.76/149,039.22 = 29,239.40/x
  3. Step 3: Cross multiply
    99,358.76x = 149,039.22 × 29,239.40
  4. Step 4: Simplify right side
    99,358.76x = 4,357,817,369.27
  5. Step 5: Solve for x
    x = 4,357,817,369.27/99,358.76
  6. Step 6: Final answer
    x = 43,859.42

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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.