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Finding the Fourth Proportional to 99,841.97, 137,547.78 and 69,572.37

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Solution

The fourth proportional to 99,841.97, 137,547.78 and 69,572.37 is: 95,846.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,841.97 : 137,547.78 = 69,572.37 : x
  2. Step 2: Convert to fraction form
    99,841.97/137,547.78 = 69,572.37/x
  3. Step 3: Cross multiply
    99,841.97x = 137,547.78 × 69,572.37
  4. Step 4: Simplify right side
    99,841.97x = 9,569,525,042.84
  5. Step 5: Solve for x
    x = 9,569,525,042.84/99,841.97
  6. Step 6: Final answer
    x = 95,846.72

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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.