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Finding the Fourth Proportional to 123,295.42, 169,992.77 and 100,611.37

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Solution

The fourth proportional to 123,295.42, 169,992.77 and 100,611.37 is: 138,717.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,295.42 : 169,992.77 = 100,611.37 : x
  2. Step 2: Convert to fraction form
    123,295.42/169,992.77 = 100,611.37/x
  3. Step 3: Cross multiply
    123,295.42x = 169,992.77 × 100,611.37
  4. Step 4: Simplify right side
    123,295.42x = 17,103,205,479.79
  5. Step 5: Solve for x
    x = 17,103,205,479.79/123,295.42
  6. Step 6: Final answer
    x = 138,717.28

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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.