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Finding the Fourth Proportional to 99,503.32, 149,098.64 and 69,487.96

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Solution

The fourth proportional to 99,503.32, 149,098.64 and 69,487.96 is: 104,122.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,503.32 : 149,098.64 = 69,487.96 : x
  2. Step 2: Convert to fraction form
    99,503.32/149,098.64 = 69,487.96/x
  3. Step 3: Cross multiply
    99,503.32x = 149,098.64 × 69,487.96
  4. Step 4: Simplify right side
    99,503.32x = 10,360,560,332.37
  5. Step 5: Solve for x
    x = 10,360,560,332.37/99,503.32
  6. Step 6: Final answer
    x = 104,122.76

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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.