Home / 128,781.39-193,184.39-40,011.06

Finding the Fourth Proportional to 128,781.39, 193,184.39 and 40,011.06

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Solution

The fourth proportional to 128,781.39, 193,184.39 and 40,011.06 is: 60,020.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,781.39 : 193,184.39 = 40,011.06 : x
  2. Step 2: Convert to fraction form
    128,781.39/193,184.39 = 40,011.06/x
  3. Step 3: Cross multiply
    128,781.39x = 193,184.39 × 40,011.06
  4. Step 4: Simplify right side
    128,781.39x = 7,729,513,043.82
  5. Step 5: Solve for x
    x = 7,729,513,043.82/128,781.39
  6. Step 6: Final answer
    x = 60,020.42

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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.