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Finding the Fourth Proportional to 101,121.40, 151,900.80 and 71,596.90

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Solution

The fourth proportional to 101,121.40, 151,900.80 and 71,596.90 is: 107,550.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,121.40 : 151,900.80 = 71,596.90 : x
  2. Step 2: Convert to fraction form
    101,121.40/151,900.80 = 71,596.90/x
  3. Step 3: Cross multiply
    101,121.40x = 151,900.80 × 71,596.90
  4. Step 4: Simplify right side
    101,121.40x = 10,875,626,387.52
  5. Step 5: Solve for x
    x = 10,875,626,387.52/101,121.40
  6. Step 6: Final answer
    x = 107,550.20

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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.