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Finding the Fourth Proportional to 113,185.70, 156,209.81 and 67,888.61

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Solution

The fourth proportional to 113,185.70, 156,209.81 and 67,888.61 is: 93,694.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,185.70 : 156,209.81 = 67,888.61 : x
  2. Step 2: Convert to fraction form
    113,185.70/156,209.81 = 67,888.61/x
  3. Step 3: Cross multiply
    113,185.70x = 156,209.81 × 67,888.61
  4. Step 4: Simplify right side
    113,185.70x = 10,604,866,869.26
  5. Step 5: Solve for x
    x = 10,604,866,869.26/113,185.70
  6. Step 6: Final answer
    x = 93,694.41

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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.