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Finding the Fourth Proportional to 99,365.65, 137,247.66 and 72,097.98

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Solution

The fourth proportional to 99,365.65, 137,247.66 and 72,097.98 is: 99,584.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,365.65 : 137,247.66 = 72,097.98 : x
  2. Step 2: Convert to fraction form
    99,365.65/137,247.66 = 72,097.98/x
  3. Step 3: Cross multiply
    99,365.65x = 137,247.66 × 72,097.98
  4. Step 4: Simplify right side
    99,365.65x = 9,895,278,865.48
  5. Step 5: Solve for x
    x = 9,895,278,865.48/99,365.65
  6. Step 6: Final answer
    x = 99,584.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.