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Finding the Fourth Proportional to 150,471.36, 207,642.48 and 86,805.36

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Solution

The fourth proportional to 150,471.36, 207,642.48 and 86,805.36 is: 119,786.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,471.36 : 207,642.48 = 86,805.36 : x
  2. Step 2: Convert to fraction form
    150,471.36/207,642.48 = 86,805.36/x
  3. Step 3: Cross multiply
    150,471.36x = 207,642.48 × 86,805.36
  4. Step 4: Simplify right side
    150,471.36x = 18,024,480,227.69
  5. Step 5: Solve for x
    x = 18,024,480,227.69/150,471.36
  6. Step 6: Final answer
    x = 119,786.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.