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Finding the Fourth Proportional to 126,013.40, 188,801.40 and 106,330.40

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Solution

The fourth proportional to 126,013.40, 188,801.40 and 106,330.40 is: 159,311.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,013.40 : 188,801.40 = 106,330.40 : x
  2. Step 2: Convert to fraction form
    126,013.40/188,801.40 = 106,330.40/x
  3. Step 3: Cross multiply
    126,013.40x = 188,801.40 × 106,330.40
  4. Step 4: Simplify right side
    126,013.40x = 20,075,328,382.56
  5. Step 5: Solve for x
    x = 20,075,328,382.56/126,013.40
  6. Step 6: Final answer
    x = 159,311.06

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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.