Home / 120,310.71-180,793.21-64,190.47

Finding the Fourth Proportional to 120,310.71, 180,793.21 and 64,190.47

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Solution

The fourth proportional to 120,310.71, 180,793.21 and 64,190.47 is: 96,460.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,310.71 : 180,793.21 = 64,190.47 : x
  2. Step 2: Convert to fraction form
    120,310.71/180,793.21 = 64,190.47/x
  3. Step 3: Cross multiply
    120,310.71x = 180,793.21 × 64,190.47
  4. Step 4: Simplify right side
    120,310.71x = 11,605,201,122.71
  5. Step 5: Solve for x
    x = 11,605,201,122.71/120,310.71
  6. Step 6: Final answer
    x = 96,460.25

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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.