Home / 149,416.59-206,189.62-81,432.21

Finding the Fourth Proportional to 149,416.59, 206,189.62 and 81,432.21

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Solution

The fourth proportional to 149,416.59, 206,189.62 and 81,432.21 is: 112,373.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,416.59 : 206,189.62 = 81,432.21 : x
  2. Step 2: Convert to fraction form
    149,416.59/206,189.62 = 81,432.21/x
  3. Step 3: Cross multiply
    149,416.59x = 206,189.62 × 81,432.21
  4. Step 4: Simplify right side
    149,416.59x = 16,790,477,119.80
  5. Step 5: Solve for x
    x = 16,790,477,119.80/149,416.59
  6. Step 6: Final answer
    x = 112,373.58

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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.