Home / 138,135.57-207,203.34-91,377.51

Finding the Fourth Proportional to 138,135.57, 207,203.34 and 91,377.51

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Solution

The fourth proportional to 138,135.57, 207,203.34 and 91,377.51 is: 137,066.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,135.57 : 207,203.34 = 91,377.51 : x
  2. Step 2: Convert to fraction form
    138,135.57/207,203.34 = 91,377.51/x
  3. Step 3: Cross multiply
    138,135.57x = 207,203.34 × 91,377.51
  4. Step 4: Simplify right side
    138,135.57x = 18,933,725,272.88
  5. Step 5: Solve for x
    x = 18,933,725,272.88/138,135.57
  6. Step 6: Final answer
    x = 137,066.26

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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.