Home / 149,875.24-206,825.38-81,890.72

Finding the Fourth Proportional to 149,875.24, 206,825.38 and 81,890.72

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Solution

The fourth proportional to 149,875.24, 206,825.38 and 81,890.72 is: 113,007.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,875.24 : 206,825.38 = 81,890.72 : x
  2. Step 2: Convert to fraction form
    149,875.24/206,825.38 = 81,890.72/x
  3. Step 3: Cross multiply
    149,875.24x = 206,825.38 × 81,890.72
  4. Step 4: Simplify right side
    149,875.24x = 16,937,079,282.47
  5. Step 5: Solve for x
    x = 16,937,079,282.47/149,875.24
  6. Step 6: Final answer
    x = 113,007.85

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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.