Home / 100,066.32-138,204.90-68,179.86

Finding the Fourth Proportional to 100,066.32, 138,204.90 and 68,179.86

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Solution

The fourth proportional to 100,066.32, 138,204.90 and 68,179.86 is: 94,165.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,066.32 : 138,204.90 = 68,179.86 : x
  2. Step 2: Convert to fraction form
    100,066.32/138,204.90 = 68,179.86/x
  3. Step 3: Cross multiply
    100,066.32x = 138,204.90 × 68,179.86
  4. Step 4: Simplify right side
    100,066.32x = 9,422,790,733.31
  5. Step 5: Solve for x
    x = 9,422,790,733.31/100,066.32
  6. Step 6: Final answer
    x = 94,165.46

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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.