Home / 98,121.78-147,197.07-31,539.96

Finding the Fourth Proportional to 98,121.78, 147,197.07 and 31,539.96

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Solution

The fourth proportional to 98,121.78, 147,197.07 and 31,539.96 is: 47,314.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,121.78 : 147,197.07 = 31,539.96 : x
  2. Step 2: Convert to fraction form
    98,121.78/147,197.07 = 31,539.96/x
  3. Step 3: Cross multiply
    98,121.78x = 147,197.07 × 31,539.96
  4. Step 4: Simplify right side
    98,121.78x = 4,642,589,699.92
  5. Step 5: Solve for x
    x = 4,642,589,699.92/98,121.78
  6. Step 6: Final answer
    x = 47,314.57

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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.