Home / 98,918.46-136,569.78-68,694.12

Finding the Fourth Proportional to 98,918.46, 136,569.78 and 68,694.12

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Solution

The fourth proportional to 98,918.46, 136,569.78 and 68,694.12 is: 94,841.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,918.46 : 136,569.78 = 68,694.12 : x
  2. Step 2: Convert to fraction form
    98,918.46/136,569.78 = 68,694.12/x
  3. Step 3: Cross multiply
    98,918.46x = 136,569.78 × 68,694.12
  4. Step 4: Simplify right side
    98,918.46x = 9,381,540,855.69
  5. Step 5: Solve for x
    x = 9,381,540,855.69/98,918.46
  6. Step 6: Final answer
    x = 94,841.15

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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.