Home / 136,613.20-204,919.80-91,998.40

Finding the Fourth Proportional to 136,613.20, 204,919.80 and 91,998.40

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Solution

The fourth proportional to 136,613.20, 204,919.80 and 91,998.40 is: 137,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,613.20 : 204,919.80 = 91,998.40 : x
  2. Step 2: Convert to fraction form
    136,613.20/204,919.80 = 91,998.40/x
  3. Step 3: Cross multiply
    136,613.20x = 204,919.80 × 91,998.40
  4. Step 4: Simplify right side
    136,613.20x = 18,852,293,728.32
  5. Step 5: Solve for x
    x = 18,852,293,728.32/136,613.20
  6. Step 6: Final answer
    x = 137,997.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.