Home / 123,388.12-170,275.92-66,799.60

Finding the Fourth Proportional to 123,388.12, 170,275.92 and 66,799.60

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Solution

The fourth proportional to 123,388.12, 170,275.92 and 66,799.60 is: 92,183.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,388.12 : 170,275.92 = 66,799.60 : x
  2. Step 2: Convert to fraction form
    123,388.12/170,275.92 = 66,799.60/x
  3. Step 3: Cross multiply
    123,388.12x = 170,275.92 × 66,799.60
  4. Step 4: Simplify right side
    123,388.12x = 11,374,363,345.63
  5. Step 5: Solve for x
    x = 11,374,363,345.63/123,388.12
  6. Step 6: Final answer
    x = 92,183.62

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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.