Home / 98,120.28-147,194.82-31,538.46

Finding the Fourth Proportional to 98,120.28, 147,194.82 and 31,538.46

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Solution

The fourth proportional to 98,120.28, 147,194.82 and 31,538.46 is: 47,312.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,120.28 : 147,194.82 = 31,538.46 : x
  2. Step 2: Convert to fraction form
    98,120.28/147,194.82 = 31,538.46/x
  3. Step 3: Cross multiply
    98,120.28x = 147,194.82 × 31,538.46
  4. Step 4: Simplify right side
    98,120.28x = 4,642,297,942.78
  5. Step 5: Solve for x
    x = 4,642,297,942.78/98,120.28
  6. Step 6: Final answer
    x = 47,312.32

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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.