Home / 127,052.52-190,552.05-81,938.76

Finding the Fourth Proportional to 127,052.52, 190,552.05 and 81,938.76

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Solution

The fourth proportional to 127,052.52, 190,552.05 and 81,938.76 is: 122,890.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,052.52 : 190,552.05 = 81,938.76 : x
  2. Step 2: Convert to fraction form
    127,052.52/190,552.05 = 81,938.76/x
  3. Step 3: Cross multiply
    127,052.52x = 190,552.05 × 81,938.76
  4. Step 4: Simplify right side
    127,052.52x = 15,613,598,692.46
  5. Step 5: Solve for x
    x = 15,613,598,692.46/127,052.52
  6. Step 6: Final answer
    x = 122,890.90

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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.