Home / 120,443.18-166,212.76-66,728.93

Finding the Fourth Proportional to 120,443.18, 166,212.76 and 66,728.93

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Solution

The fourth proportional to 120,443.18, 166,212.76 and 66,728.93 is: 92,086.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,443.18 : 166,212.76 = 66,728.93 : x
  2. Step 2: Convert to fraction form
    120,443.18/166,212.76 = 66,728.93/x
  3. Step 3: Cross multiply
    120,443.18x = 166,212.76 × 66,728.93
  4. Step 4: Simplify right side
    120,443.18x = 11,091,199,627.15
  5. Step 5: Solve for x
    x = 11,091,199,627.15/120,443.18
  6. Step 6: Final answer
    x = 92,086.57

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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.