Home / 120,020.40-180,030.64-31,273.68

Finding the Fourth Proportional to 120,020.40, 180,030.64 and 31,273.68

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Solution

The fourth proportional to 120,020.40, 180,030.64 and 31,273.68 is: 46,910.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,020.40 : 180,030.64 = 31,273.68 : x
  2. Step 2: Convert to fraction form
    120,020.40/180,030.64 = 31,273.68/x
  3. Step 3: Cross multiply
    120,020.40x = 180,030.64 × 31,273.68
  4. Step 4: Simplify right side
    120,020.40x = 5,630,220,625.56
  5. Step 5: Solve for x
    x = 5,630,220,625.56/120,020.40
  6. Step 6: Final answer
    x = 46,910.53

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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.