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Finding the Fourth Proportional to 92,346.84, 137,795.40 and 86,704.20

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Solution

The fourth proportional to 92,346.84, 137,795.40 and 86,704.20 is: 129,375.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,346.84 : 137,795.40 = 86,704.20 : x
  2. Step 2: Convert to fraction form
    92,346.84/137,795.40 = 86,704.20/x
  3. Step 3: Cross multiply
    92,346.84x = 137,795.40 × 86,704.20
  4. Step 4: Simplify right side
    92,346.84x = 11,947,439,920.68
  5. Step 5: Solve for x
    x = 11,947,439,920.68/92,346.84
  6. Step 6: Final answer
    x = 129,375.73

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.