Home / 123,207.30-170,025.93-66,618.54

Finding the Fourth Proportional to 123,207.30, 170,025.93 and 66,618.54

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Solution

The fourth proportional to 123,207.30, 170,025.93 and 66,618.54 is: 91,933.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,207.30 : 170,025.93 = 66,618.54 : x
  2. Step 2: Convert to fraction form
    123,207.30/170,025.93 = 66,618.54/x
  3. Step 3: Cross multiply
    123,207.30x = 170,025.93 × 66,618.54
  4. Step 4: Simplify right side
    123,207.30x = 11,326,879,218.74
  5. Step 5: Solve for x
    x = 11,326,879,218.74/123,207.30
  6. Step 6: Final answer
    x = 91,933.51

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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.