Home / 153,945.70-231,156.15-83,961.70

Finding the Fourth Proportional to 153,945.70, 231,156.15 and 83,961.70

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Solution

The fourth proportional to 153,945.70, 231,156.15 and 83,961.70 is: 126,072.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,945.70 : 231,156.15 = 83,961.70 : x
  2. Step 2: Convert to fraction form
    153,945.70/231,156.15 = 83,961.70/x
  3. Step 3: Cross multiply
    153,945.70x = 231,156.15 × 83,961.70
  4. Step 4: Simplify right side
    153,945.70x = 19,408,263,319.46
  5. Step 5: Solve for x
    x = 19,408,263,319.46/153,945.70
  6. Step 6: Final answer
    x = 126,072.14

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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.