Home / 142,216.97-196,249.43-78,549.75

Finding the Fourth Proportional to 142,216.97, 196,249.43 and 78,549.75

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Solution

The fourth proportional to 142,216.97, 196,249.43 and 78,549.75 is: 108,393.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,216.97 : 196,249.43 = 78,549.75 : x
  2. Step 2: Convert to fraction form
    142,216.97/196,249.43 = 78,549.75/x
  3. Step 3: Cross multiply
    142,216.97x = 196,249.43 × 78,549.75
  4. Step 4: Simplify right side
    142,216.97x = 15,415,343,860.52
  5. Step 5: Solve for x
    x = 15,415,343,860.52/142,216.97
  6. Step 6: Final answer
    x = 108,393.14

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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.