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Finding the Fourth Proportional to 99,699.17, 137,550.42 and 63,908.93

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Solution

The fourth proportional to 99,699.17, 137,550.42 and 63,908.93 is: 88,172.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,699.17 : 137,550.42 = 63,908.93 : x
  2. Step 2: Convert to fraction form
    99,699.17/137,550.42 = 63,908.93/x
  3. Step 3: Cross multiply
    99,699.17x = 137,550.42 × 63,908.93
  4. Step 4: Simplify right side
    99,699.17x = 8,790,700,163.25
  5. Step 5: Solve for x
    x = 8,790,700,163.25/99,699.17
  6. Step 6: Final answer
    x = 88,172.25

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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.