Home / 149,343.60-206,086.86-81,360.12

Finding the Fourth Proportional to 149,343.60, 206,086.86 and 81,360.12

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Solution

The fourth proportional to 149,343.60, 206,086.86 and 81,360.12 is: 112,272.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,343.60 : 206,086.86 = 81,360.12 : x
  2. Step 2: Convert to fraction form
    149,343.60/206,086.86 = 81,360.12/x
  3. Step 3: Cross multiply
    149,343.60x = 206,086.86 × 81,360.12
  4. Step 4: Simplify right side
    149,343.60x = 16,767,251,660.02
  5. Step 5: Solve for x
    x = 16,767,251,660.02/149,343.60
  6. Step 6: Final answer
    x = 112,272.98

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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.