Home / 122,138.10-183,207.15-111,251.70

Finding the Fourth Proportional to 122,138.10, 183,207.15 and 111,251.70

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Solution

The fourth proportional to 122,138.10, 183,207.15 and 111,251.70 is: 166,877.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,138.10 : 183,207.15 = 111,251.70 : x
  2. Step 2: Convert to fraction form
    122,138.10/183,207.15 = 111,251.70/x
  3. Step 3: Cross multiply
    122,138.10x = 183,207.15 × 111,251.70
  4. Step 4: Simplify right side
    122,138.10x = 20,382,106,889.66
  5. Step 5: Solve for x
    x = 20,382,106,889.66/122,138.10
  6. Step 6: Final answer
    x = 166,877.55

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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.