Home / 120,020.32-180,030.56-31,273.60

Finding the Fourth Proportional to 120,020.32, 180,030.56 and 31,273.60

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Solution

The fourth proportional to 120,020.32, 180,030.56 and 31,273.60 is: 46,910.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,020.32 : 180,030.56 = 31,273.60 : x
  2. Step 2: Convert to fraction form
    120,020.32/180,030.56 = 31,273.60/x
  3. Step 3: Cross multiply
    120,020.32x = 180,030.56 × 31,273.60
  4. Step 4: Simplify right side
    120,020.32x = 5,630,203,721.22
  5. Step 5: Solve for x
    x = 5,630,203,721.22/120,020.32
  6. Step 6: Final answer
    x = 46,910.42

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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.