Home / 120,840.78-166,630.26-75,502.20

Finding the Fourth Proportional to 120,840.78, 166,630.26 and 75,502.20

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Solution

The fourth proportional to 120,840.78, 166,630.26 and 75,502.20 is: 104,111.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,840.78 : 166,630.26 = 75,502.20 : x
  2. Step 2: Convert to fraction form
    120,840.78/166,630.26 = 75,502.20/x
  3. Step 3: Cross multiply
    120,840.78x = 166,630.26 × 75,502.20
  4. Step 4: Simplify right side
    120,840.78x = 12,580,951,216.57
  5. Step 5: Solve for x
    x = 12,580,951,216.57/120,840.78
  6. Step 6: Final answer
    x = 104,111.80

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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.