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Finding the Fourth Proportional to 123,699.93, 170,706.21 and 67,111.29

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Solution

The fourth proportional to 123,699.93, 170,706.21 and 67,111.29 is: 92,613.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,699.93 : 170,706.21 = 67,111.29 : x
  2. Step 2: Convert to fraction form
    123,699.93/170,706.21 = 67,111.29/x
  3. Step 3: Cross multiply
    123,699.93x = 170,706.21 × 67,111.29
  4. Step 4: Simplify right side
    123,699.93x = 11,456,313,964.11
  5. Step 5: Solve for x
    x = 11,456,313,964.11/123,699.93
  6. Step 6: Final answer
    x = 92,613.75

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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.