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Finding the Fourth Proportional to 139,382.84, 192,506.42 and 93,982.55

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Solution

The fourth proportional to 139,382.84, 192,506.42 and 93,982.55 is: 129,802.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,382.84 : 192,506.42 = 93,982.55 : x
  2. Step 2: Convert to fraction form
    139,382.84/192,506.42 = 93,982.55/x
  3. Step 3: Cross multiply
    139,382.84x = 192,506.42 × 93,982.55
  4. Step 4: Simplify right side
    139,382.84x = 18,092,243,515.40
  5. Step 5: Solve for x
    x = 18,092,243,515.40/139,382.84
  6. Step 6: Final answer
    x = 129,802.52

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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.