Home / 135,665.25-187,218.05-75,245.15

Finding the Fourth Proportional to 135,665.25, 187,218.05 and 75,245.15

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Solution

The fourth proportional to 135,665.25, 187,218.05 and 75,245.15 is: 103,838.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,665.25 : 187,218.05 = 75,245.15 : x
  2. Step 2: Convert to fraction form
    135,665.25/187,218.05 = 75,245.15/x
  3. Step 3: Cross multiply
    135,665.25x = 187,218.05 × 75,245.15
  4. Step 4: Simplify right side
    135,665.25x = 14,087,248,942.64
  5. Step 5: Solve for x
    x = 14,087,248,942.64/135,665.25
  6. Step 6: Final answer
    x = 103,838.30

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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.