Home / 127,720.39-191,580.60-38,974.36

Finding the Fourth Proportional to 127,720.39, 191,580.60 and 38,974.36

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Solution

The fourth proportional to 127,720.39, 191,580.60 and 38,974.36 is: 58,461.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,720.39 : 191,580.60 = 38,974.36 : x
  2. Step 2: Convert to fraction form
    127,720.39/191,580.60 = 38,974.36/x
  3. Step 3: Cross multiply
    127,720.39x = 191,580.60 × 38,974.36
  4. Step 4: Simplify right side
    127,720.39x = 7,466,731,273.42
  5. Step 5: Solve for x
    x = 7,466,731,273.42/127,720.39
  6. Step 6: Final answer
    x = 58,461.54

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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.