Home / 131,817.78-181,907.49-71,388.24

Finding the Fourth Proportional to 131,817.78, 181,907.49 and 71,388.24

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Solution

The fourth proportional to 131,817.78, 181,907.49 and 71,388.24 is: 98,515.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,817.78 : 181,907.49 = 71,388.24 : x
  2. Step 2: Convert to fraction form
    131,817.78/181,907.49 = 71,388.24/x
  3. Step 3: Cross multiply
    131,817.78x = 181,907.49 × 71,388.24
  4. Step 4: Simplify right side
    131,817.78x = 12,986,055,553.92
  5. Step 5: Solve for x
    x = 12,986,055,553.92/131,817.78
  6. Step 6: Final answer
    x = 98,515.20

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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.