Home / 120,312.96-166,032.20-66,601.68

Finding the Fourth Proportional to 120,312.96, 166,032.20 and 66,601.68

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Solution

The fourth proportional to 120,312.96, 166,032.20 and 66,601.68 is: 91,910.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,312.96 : 166,032.20 = 66,601.68 : x
  2. Step 2: Convert to fraction form
    120,312.96/166,032.20 = 66,601.68/x
  3. Step 3: Cross multiply
    120,312.96x = 166,032.20 × 66,601.68
  4. Step 4: Simplify right side
    120,312.96x = 11,058,023,454.10
  5. Step 5: Solve for x
    x = 11,058,023,454.10/120,312.96
  6. Step 6: Final answer
    x = 91,910.49

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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.