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Finding the Fourth Proportional to 101,121.90, 151,901.55 and 71,597.40

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Solution

The fourth proportional to 101,121.90, 151,901.55 and 71,597.40 is: 107,550.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,121.90 : 151,901.55 = 71,597.40 : x
  2. Step 2: Convert to fraction form
    101,121.90/151,901.55 = 71,597.40/x
  3. Step 3: Cross multiply
    101,121.90x = 151,901.55 × 71,597.40
  4. Step 4: Simplify right side
    101,121.90x = 10,875,756,035.97
  5. Step 5: Solve for x
    x = 10,875,756,035.97/101,121.90
  6. Step 6: Final answer
    x = 107,550.95

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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.