Home / 120,020.55-180,026.10-31,274.79

Finding the Fourth Proportional to 120,020.55, 180,026.10 and 31,274.79

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Solution

The fourth proportional to 120,020.55, 180,026.10 and 31,274.79 is: 46,910.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,020.55 : 180,026.10 = 31,274.79 : x
  2. Step 2: Convert to fraction form
    120,020.55/180,026.10 = 31,274.79/x
  3. Step 3: Cross multiply
    120,020.55x = 180,026.10 × 31,274.79
  4. Step 4: Simplify right side
    120,020.55x = 5,630,278,472.02
  5. Step 5: Solve for x
    x = 5,630,278,472.02/120,020.55
  6. Step 6: Final answer
    x = 46,910.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.