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Finding the Fourth Proportional to 139,984.95, 193,195.90 and 88,377.03

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Solution

The fourth proportional to 139,984.95, 193,195.90 and 88,377.03 is: 121,970.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,984.95 : 193,195.90 = 88,377.03 : x
  2. Step 2: Convert to fraction form
    139,984.95/193,195.90 = 88,377.03/x
  3. Step 3: Cross multiply
    139,984.95x = 193,195.90 × 88,377.03
  4. Step 4: Simplify right side
    139,984.95x = 17,074,079,850.18
  5. Step 5: Solve for x
    x = 17,074,079,850.18/139,984.95
  6. Step 6: Final answer
    x = 121,970.83

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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.