Home / 135,508.32-187,032.54-90,188.22

Finding the Fourth Proportional to 135,508.32, 187,032.54 and 90,188.22

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Solution

The fourth proportional to 135,508.32, 187,032.54 and 90,188.22 is: 124,480.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,508.32 : 187,032.54 = 90,188.22 : x
  2. Step 2: Convert to fraction form
    135,508.32/187,032.54 = 90,188.22/x
  3. Step 3: Cross multiply
    135,508.32x = 187,032.54 × 90,188.22
  4. Step 4: Simplify right side
    135,508.32x = 16,868,131,864.68
  5. Step 5: Solve for x
    x = 16,868,131,864.68/135,508.32
  6. Step 6: Final answer
    x = 124,480.41

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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.