Home / 123,486.12-170,409.24-69,770.16

Finding the Fourth Proportional to 123,486.12, 170,409.24 and 69,770.16

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Solution

The fourth proportional to 123,486.12, 170,409.24 and 69,770.16 is: 96,281.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,486.12 : 170,409.24 = 69,770.16 : x
  2. Step 2: Convert to fraction form
    123,486.12/170,409.24 = 69,770.16/x
  3. Step 3: Cross multiply
    123,486.12x = 170,409.24 × 69,770.16
  4. Step 4: Simplify right side
    123,486.12x = 11,889,479,940.28
  5. Step 5: Solve for x
    x = 11,889,479,940.28/123,486.12
  6. Step 6: Final answer
    x = 96,281.91

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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.