Home / 103,979.84-143,426.12-68,172.17

Finding the Fourth Proportional to 103,979.84, 143,426.12 and 68,172.17

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Solution

The fourth proportional to 103,979.84, 143,426.12 and 68,172.17 is: 94,034.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,979.84 : 143,426.12 = 68,172.17 : x
  2. Step 2: Convert to fraction form
    103,979.84/143,426.12 = 68,172.17/x
  3. Step 3: Cross multiply
    103,979.84x = 143,426.12 × 68,172.17
  4. Step 4: Simplify right side
    103,979.84x = 9,777,668,777.09
  5. Step 5: Solve for x
    x = 9,777,668,777.09/103,979.84
  6. Step 6: Final answer
    x = 94,034.28

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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.