Home / 153,945.20-231,155.40-83,961.20

Finding the Fourth Proportional to 153,945.20, 231,155.40 and 83,961.20

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Solution

The fourth proportional to 153,945.20, 231,155.40 and 83,961.20 is: 126,071.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,945.20 : 231,155.40 = 83,961.20 : x
  2. Step 2: Convert to fraction form
    153,945.20/231,155.40 = 83,961.20/x
  3. Step 3: Cross multiply
    153,945.20x = 231,155.40 × 83,961.20
  4. Step 4: Simplify right side
    153,945.20x = 19,408,084,770.48
  5. Step 5: Solve for x
    x = 19,408,084,770.48/153,945.20
  6. Step 6: Final answer
    x = 126,071.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.