Home / 127,647.78-191,500.13-38,908.21

Finding the Fourth Proportional to 127,647.78, 191,500.13 and 38,908.21

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Solution

The fourth proportional to 127,647.78, 191,500.13 and 38,908.21 is: 58,370.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,647.78 : 191,500.13 = 38,908.21 : x
  2. Step 2: Convert to fraction form
    127,647.78/191,500.13 = 38,908.21/x
  3. Step 3: Cross multiply
    127,647.78x = 191,500.13 × 38,908.21
  4. Step 4: Simplify right side
    127,647.78x = 7,450,927,273.07
  5. Step 5: Solve for x
    x = 7,450,927,273.07/127,647.78
  6. Step 6: Final answer
    x = 58,370.99

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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.