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Finding the Fourth Proportional to 120,362.32, 166,101.75 and 66,647.23

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Solution

The fourth proportional to 120,362.32, 166,101.75 and 66,647.23 is: 91,974.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,362.32 : 166,101.75 = 66,647.23 : x
  2. Step 2: Convert to fraction form
    120,362.32/166,101.75 = 66,647.23/x
  3. Step 3: Cross multiply
    120,362.32x = 166,101.75 × 66,647.23
  4. Step 4: Simplify right side
    120,362.32x = 11,070,221,535.65
  5. Step 5: Solve for x
    x = 11,070,221,535.65/120,362.32
  6. Step 6: Final answer
    x = 91,974.15

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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.