Home / 149,380.93-206,143.27-81,398.78

Finding the Fourth Proportional to 149,380.93, 206,143.27 and 81,398.78

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Solution

The fourth proportional to 149,380.93, 206,143.27 and 81,398.78 is: 112,329.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,380.93 : 206,143.27 = 81,398.78 : x
  2. Step 2: Convert to fraction form
    149,380.93/206,143.27 = 81,398.78/x
  3. Step 3: Cross multiply
    149,380.93x = 206,143.27 × 81,398.78
  4. Step 4: Simplify right side
    149,380.93x = 16,779,810,683.21
  5. Step 5: Solve for x
    x = 16,779,810,683.21/149,380.93
  6. Step 6: Final answer
    x = 112,329.00

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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.