Home / 149,707.32-206,596.64-81,725.80

Finding the Fourth Proportional to 149,707.32, 206,596.64 and 81,725.80

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Solution

The fourth proportional to 149,707.32, 206,596.64 and 81,725.80 is: 112,781.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,707.32 : 206,596.64 = 81,725.80 : x
  2. Step 2: Convert to fraction form
    149,707.32/206,596.64 = 81,725.80/x
  3. Step 3: Cross multiply
    149,707.32x = 206,596.64 × 81,725.80
  4. Step 4: Simplify right side
    149,707.32x = 16,884,275,681.31
  5. Step 5: Solve for x
    x = 16,884,275,681.31/149,707.32
  6. Step 6: Final answer
    x = 112,781.90

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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.