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Finding the Fourth Proportional to 172,944.55, 238,572.70 and 140,715.20

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Solution

The fourth proportional to 172,944.55, 238,572.70 and 140,715.20 is: 194,113.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,944.55 : 238,572.70 = 140,715.20 : x
  2. Step 2: Convert to fraction form
    172,944.55/238,572.70 = 140,715.20/x
  3. Step 3: Cross multiply
    172,944.55x = 238,572.70 × 140,715.20
  4. Step 4: Simplify right side
    172,944.55x = 33,570,805,195.04
  5. Step 5: Solve for x
    x = 33,570,805,195.04/172,944.55
  6. Step 6: Final answer
    x = 194,113.11

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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.