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Finding the Fourth Proportional to 120,897.68, 166,791.02 and 69,901.07

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Solution

The fourth proportional to 120,897.68, 166,791.02 and 69,901.07 is: 96,435.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,897.68 : 166,791.02 = 69,901.07 : x
  2. Step 2: Convert to fraction form
    120,897.68/166,791.02 = 69,901.07/x
  3. Step 3: Cross multiply
    120,897.68x = 166,791.02 × 69,901.07
  4. Step 4: Simplify right side
    120,897.68x = 11,658,870,105.19
  5. Step 5: Solve for x
    x = 11,658,870,105.19/120,897.68
  6. Step 6: Final answer
    x = 96,435.85

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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.