Home / 123,161.32-169,964.52-72,161.85

Finding the Fourth Proportional to 123,161.32, 169,964.52 and 72,161.85

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Solution

The fourth proportional to 123,161.32, 169,964.52 and 72,161.85 is: 99,584.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,161.32 : 169,964.52 = 72,161.85 : x
  2. Step 2: Convert to fraction form
    123,161.32/169,964.52 = 72,161.85/x
  3. Step 3: Cross multiply
    123,161.32x = 169,964.52 × 72,161.85
  4. Step 4: Simplify right side
    123,161.32x = 12,264,954,197.56
  5. Step 5: Solve for x
    x = 12,264,954,197.56/123,161.32
  6. Step 6: Final answer
    x = 99,584.47

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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.