Home / 123,288.39-170,083.80-72,275.22

Finding the Fourth Proportional to 123,288.39, 170,083.80 and 72,275.22

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Solution

The fourth proportional to 123,288.39, 170,083.80 and 72,275.22 is: 99,708.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,288.39 : 170,083.80 = 72,275.22 : x
  2. Step 2: Convert to fraction form
    123,288.39/170,083.80 = 72,275.22/x
  3. Step 3: Cross multiply
    123,288.39x = 170,083.80 × 72,275.22
  4. Step 4: Simplify right side
    123,288.39x = 12,292,844,063.44
  5. Step 5: Solve for x
    x = 12,292,844,063.44/123,288.39
  6. Step 6: Final answer
    x = 99,708.04

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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.