Home / 149,521.68-206,342.64-81,539.46

Finding the Fourth Proportional to 149,521.68, 206,342.64 and 81,539.46

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Solution

The fourth proportional to 149,521.68, 206,342.64 and 81,539.46 is: 112,525.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,521.68 : 206,342.64 = 81,539.46 : x
  2. Step 2: Convert to fraction form
    149,521.68/206,342.64 = 81,539.46/x
  3. Step 3: Cross multiply
    149,521.68x = 206,342.64 × 81,539.46
  4. Step 4: Simplify right side
    149,521.68x = 16,825,067,440.57
  5. Step 5: Solve for x
    x = 16,825,067,440.57/149,521.68
  6. Step 6: Final answer
    x = 112,525.94

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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.