Home / 115,965.11-158,832.76-109,156.25

Finding the Fourth Proportional to 115,965.11, 158,832.76 and 109,156.25

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Solution

The fourth proportional to 115,965.11, 158,832.76 and 109,156.25 is: 149,506.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,965.11 : 158,832.76 = 109,156.25 : x
  2. Step 2: Convert to fraction form
    115,965.11/158,832.76 = 109,156.25/x
  3. Step 3: Cross multiply
    115,965.11x = 158,832.76 × 109,156.25
  4. Step 4: Simplify right side
    115,965.11x = 17,337,587,801.03
  5. Step 5: Solve for x
    x = 17,337,587,801.03/115,965.11
  6. Step 6: Final answer
    x = 149,506.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.