Home / 120,777.13-180,352.38-98,634.43

Finding the Fourth Proportional to 120,777.13, 180,352.38 and 98,634.43

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Solution

The fourth proportional to 120,777.13, 180,352.38 and 98,634.43 is: 147,287.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,777.13 : 180,352.38 = 98,634.43 : x
  2. Step 2: Convert to fraction form
    120,777.13/180,352.38 = 98,634.43/x
  3. Step 3: Cross multiply
    120,777.13x = 180,352.38 × 98,634.43
  4. Step 4: Simplify right side
    120,777.13x = 17,788,954,200.44
  5. Step 5: Solve for x
    x = 17,788,954,200.44/120,777.13
  6. Step 6: Final answer
    x = 147,287.44

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.