Home / 135,705.20-187,295.62-75,295.28

Finding the Fourth Proportional to 135,705.20, 187,295.62 and 75,295.28

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Solution

The fourth proportional to 135,705.20, 187,295.62 and 75,295.28 is: 103,919.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,705.20 : 187,295.62 = 75,295.28 : x
  2. Step 2: Convert to fraction form
    135,705.20/187,295.62 = 75,295.28/x
  3. Step 3: Cross multiply
    135,705.20x = 187,295.62 × 75,295.28
  4. Step 4: Simplify right side
    135,705.20x = 14,102,476,150.67
  5. Step 5: Solve for x
    x = 14,102,476,150.67/135,705.20
  6. Step 6: Final answer
    x = 103,919.94

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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.