Home / 120,412.12-166,178.10-66,702.25

Finding the Fourth Proportional to 120,412.12, 166,178.10 and 66,702.25

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Solution

The fourth proportional to 120,412.12, 166,178.10 and 66,702.25 is: 92,054.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,412.12 : 166,178.10 = 66,702.25 : x
  2. Step 2: Convert to fraction form
    120,412.12/166,178.10 = 66,702.25/x
  3. Step 3: Cross multiply
    120,412.12x = 166,178.10 × 66,702.25
  4. Step 4: Simplify right side
    120,412.12x = 11,084,453,170.73
  5. Step 5: Solve for x
    x = 11,084,453,170.73/120,412.12
  6. Step 6: Final answer
    x = 92,054.30

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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.