Home / 100,351.82-138,422.04-64,480.16

Finding the Fourth Proportional to 100,351.82, 138,422.04 and 64,480.16

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Solution

The fourth proportional to 100,351.82, 138,422.04 and 64,480.16 is: 88,941.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,351.82 : 138,422.04 = 64,480.16 : x
  2. Step 2: Convert to fraction form
    100,351.82/138,422.04 = 64,480.16/x
  3. Step 3: Cross multiply
    100,351.82x = 138,422.04 × 64,480.16
  4. Step 4: Simplify right side
    100,351.82x = 8,925,475,286.73
  5. Step 5: Solve for x
    x = 8,925,475,286.73/100,351.82
  6. Step 6: Final answer
    x = 88,941.84

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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.