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Finding the Fourth Proportional to 153,630.75, 212,010.44 and 82,974.75

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Solution

The fourth proportional to 153,630.75, 212,010.44 and 82,974.75 is: 114,505.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,630.75 : 212,010.44 = 82,974.75 : x
  2. Step 2: Convert to fraction form
    153,630.75/212,010.44 = 82,974.75/x
  3. Step 3: Cross multiply
    153,630.75x = 212,010.44 × 82,974.75
  4. Step 4: Simplify right side
    153,630.75x = 17,591,512,841.52
  5. Step 5: Solve for x
    x = 17,591,512,841.52/153,630.75
  6. Step 6: Final answer
    x = 114,505.16

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1.5x scale

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.