Home / 149,373.20-206,134.08-81,394.16

Finding the Fourth Proportional to 149,373.20, 206,134.08 and 81,394.16

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Solution

The fourth proportional to 149,373.20, 206,134.08 and 81,394.16 is: 112,323.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,373.20 : 206,134.08 = 81,394.16 : x
  2. Step 2: Convert to fraction form
    149,373.20/206,134.08 = 81,394.16/x
  3. Step 3: Cross multiply
    149,373.20x = 206,134.08 × 81,394.16
  4. Step 4: Simplify right side
    149,373.20x = 16,778,110,288.97
  5. Step 5: Solve for x
    x = 16,778,110,288.97/149,373.20
  6. Step 6: Final answer
    x = 112,323.43

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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.