Home / 149,410.17-206,180.79-81,425.76

Finding the Fourth Proportional to 149,410.17, 206,180.79 and 81,425.76

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Solution

The fourth proportional to 149,410.17, 206,180.79 and 81,425.76 is: 112,364.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,410.17 : 206,180.79 = 81,425.76 : x
  2. Step 2: Convert to fraction form
    149,410.17/206,180.79 = 81,425.76/x
  3. Step 3: Cross multiply
    149,410.17x = 206,180.79 × 81,425.76
  4. Step 4: Simplify right side
    149,410.17x = 16,788,427,523.15
  5. Step 5: Solve for x
    x = 16,788,427,523.15/149,410.17
  6. Step 6: Final answer
    x = 112,364.69

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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.