Home / 123,393.12-170,282.84-66,804.36

Finding the Fourth Proportional to 123,393.12, 170,282.84 and 66,804.36

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Solution

The fourth proportional to 123,393.12, 170,282.84 and 66,804.36 is: 92,190.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,393.12 : 170,282.84 = 66,804.36 : x
  2. Step 2: Convert to fraction form
    123,393.12/170,282.84 = 66,804.36/x
  3. Step 3: Cross multiply
    123,393.12x = 170,282.84 × 66,804.36
  4. Step 4: Simplify right side
    123,393.12x = 11,375,636,145.18
  5. Step 5: Solve for x
    x = 11,375,636,145.18/123,393.12
  6. Step 6: Final answer
    x = 92,190.20

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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.