Home / 138,250.68-190,786.32-77,822.25

Finding the Fourth Proportional to 138,250.68, 190,786.32 and 77,822.25

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Solution

The fourth proportional to 138,250.68, 190,786.32 and 77,822.25 is: 107,394.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,250.68 : 190,786.32 = 77,822.25 : x
  2. Step 2: Convert to fraction form
    138,250.68/190,786.32 = 77,822.25/x
  3. Step 3: Cross multiply
    138,250.68x = 190,786.32 × 77,822.25
  4. Step 4: Simplify right side
    138,250.68x = 14,847,420,691.62
  5. Step 5: Solve for x
    x = 14,847,420,691.62/138,250.68
  6. Step 6: Final answer
    x = 107,394.92

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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.