Home / 120,350.31-166,088.61-66,635.32

Finding the Fourth Proportional to 120,350.31, 166,088.61 and 66,635.32

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Solution

The fourth proportional to 120,350.31, 166,088.61 and 66,635.32 is: 91,959.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,350.31 : 166,088.61 = 66,635.32 : x
  2. Step 2: Convert to fraction form
    120,350.31/166,088.61 = 66,635.32/x
  3. Step 3: Cross multiply
    120,350.31x = 166,088.61 × 66,635.32
  4. Step 4: Simplify right side
    120,350.31x = 11,067,368,090.93
  5. Step 5: Solve for x
    x = 11,067,368,090.93/120,350.31
  6. Step 6: Final answer
    x = 91,959.62

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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.