Home / 127,138.38-190,699.11-52,239.12

Finding the Fourth Proportional to 127,138.38, 190,699.11 and 52,239.12

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Solution

The fourth proportional to 127,138.38, 190,699.11 and 52,239.12 is: 78,355.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,138.38 : 190,699.11 = 52,239.12 : x
  2. Step 2: Convert to fraction form
    127,138.38/190,699.11 = 52,239.12/x
  3. Step 3: Cross multiply
    127,138.38x = 190,699.11 × 52,239.12
  4. Step 4: Simplify right side
    127,138.38x = 9,961,953,691.18
  5. Step 5: Solve for x
    x = 9,961,953,691.18/127,138.38
  6. Step 6: Final answer
    x = 78,355.20

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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.