Home / 123,478.26-170,399.73-66,890.10

Finding the Fourth Proportional to 123,478.26, 170,399.73 and 66,890.10

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Solution

The fourth proportional to 123,478.26, 170,399.73 and 66,890.10 is: 92,308.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,478.26 : 170,399.73 = 66,890.10 : x
  2. Step 2: Convert to fraction form
    123,478.26/170,399.73 = 66,890.10/x
  3. Step 3: Cross multiply
    123,478.26x = 170,399.73 × 66,890.10
  4. Step 4: Simplify right side
    123,478.26x = 11,398,054,979.67
  5. Step 5: Solve for x
    x = 11,398,054,979.67/123,478.26
  6. Step 6: Final answer
    x = 92,308.19

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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.