Home / 120,319.92-166,039.48-66,603.80

Finding the Fourth Proportional to 120,319.92, 166,039.48 and 66,603.80

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Solution

The fourth proportional to 120,319.92, 166,039.48 and 66,603.80 is: 91,912.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,319.92 : 166,039.48 = 66,603.80 : x
  2. Step 2: Convert to fraction form
    120,319.92/166,039.48 = 66,603.80/x
  3. Step 3: Cross multiply
    120,319.92x = 166,039.48 × 66,603.80
  4. Step 4: Simplify right side
    120,319.92x = 11,058,860,318.02
  5. Step 5: Solve for x
    x = 11,058,860,318.02/120,319.92
  6. Step 6: Final answer
    x = 91,912.13

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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.