Home / 135,350.75-186,781.33-74,921.38

Finding the Fourth Proportional to 135,350.75, 186,781.33 and 74,921.38

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Solution

The fourth proportional to 135,350.75, 186,781.33 and 74,921.38 is: 103,390.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,350.75 : 186,781.33 = 74,921.38 : x
  2. Step 2: Convert to fraction form
    135,350.75/186,781.33 = 74,921.38/x
  3. Step 3: Cross multiply
    135,350.75x = 186,781.33 × 74,921.38
  4. Step 4: Simplify right side
    135,350.75x = 13,993,915,001.84
  5. Step 5: Solve for x
    x = 13,993,915,001.84/135,350.75
  6. Step 6: Final answer
    x = 103,390.01

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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.