Home / 149,312.64-206,049.68-81,329.40

Finding the Fourth Proportional to 149,312.64, 206,049.68 and 81,329.40

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Solution

The fourth proportional to 149,312.64, 206,049.68 and 81,329.40 is: 112,233.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,312.64 : 206,049.68 = 81,329.40 : x
  2. Step 2: Convert to fraction form
    149,312.64/206,049.68 = 81,329.40/x
  3. Step 3: Cross multiply
    149,312.64x = 206,049.68 × 81,329.40
  4. Step 4: Simplify right side
    149,312.64x = 16,757,896,844.59
  5. Step 5: Solve for x
    x = 16,757,896,844.59/149,312.64
  6. Step 6: Final answer
    x = 112,233.61

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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.