Home / 120,345.16-166,082.45-66,636.08

Finding the Fourth Proportional to 120,345.16, 166,082.45 and 66,636.08

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Solution

The fourth proportional to 120,345.16, 166,082.45 and 66,636.08 is: 91,961.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,345.16 : 166,082.45 = 66,636.08 : x
  2. Step 2: Convert to fraction form
    120,345.16/166,082.45 = 66,636.08/x
  3. Step 3: Cross multiply
    120,345.16x = 166,082.45 × 66,636.08
  4. Step 4: Simplify right side
    120,345.16x = 11,067,083,424.80
  5. Step 5: Solve for x
    x = 11,067,083,424.80/120,345.16
  6. Step 6: Final answer
    x = 91,961.18

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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.