Home / 120,112.07-180,168.12-31,364.79

Finding the Fourth Proportional to 120,112.07, 180,168.12 and 31,364.79

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Solution

The fourth proportional to 120,112.07, 180,168.12 and 31,364.79 is: 47,047.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,112.07 : 180,168.12 = 31,364.79 : x
  2. Step 2: Convert to fraction form
    120,112.07/180,168.12 = 31,364.79/x
  3. Step 3: Cross multiply
    120,112.07x = 180,168.12 × 31,364.79
  4. Step 4: Simplify right side
    120,112.07x = 5,650,936,181.25
  5. Step 5: Solve for x
    x = 5,650,936,181.25/120,112.07
  6. Step 6: Final answer
    x = 47,047.20

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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.