Home / 120,021.32-180,032.06-31,274.60

Finding the Fourth Proportional to 120,021.32, 180,032.06 and 31,274.60

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Solution

The fourth proportional to 120,021.32, 180,032.06 and 31,274.60 is: 46,911.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,021.32 : 180,032.06 = 31,274.60 : x
  2. Step 2: Convert to fraction form
    120,021.32/180,032.06 = 31,274.60/x
  3. Step 3: Cross multiply
    120,021.32x = 180,032.06 × 31,274.60
  4. Step 4: Simplify right side
    120,021.32x = 5,630,430,663.68
  5. Step 5: Solve for x
    x = 5,630,430,663.68/120,021.32
  6. Step 6: Final answer
    x = 46,911.92

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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.