Home / 111,961.18-154,517.34-83,617.66

Finding the Fourth Proportional to 111,961.18, 154,517.34 and 83,617.66

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Solution

The fourth proportional to 111,961.18, 154,517.34 and 83,617.66 is: 115,400.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,961.18 : 154,517.34 = 83,617.66 : x
  2. Step 2: Convert to fraction form
    111,961.18/154,517.34 = 83,617.66/x
  3. Step 3: Cross multiply
    111,961.18x = 154,517.34 × 83,617.66
  4. Step 4: Simplify right side
    111,961.18x = 12,920,378,400.22
  5. Step 5: Solve for x
    x = 12,920,378,400.22/111,961.18
  6. Step 6: Final answer
    x = 115,400.52

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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.