Home / 198,649.45-274,147.91-112,615.30

Finding the Fourth Proportional to 198,649.45, 274,147.91 and 112,615.30

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Solution

The fourth proportional to 198,649.45, 274,147.91 and 112,615.30 is: 155,415.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,649.45 : 274,147.91 = 112,615.30 : x
  2. Step 2: Convert to fraction form
    198,649.45/274,147.91 = 112,615.30/x
  3. Step 3: Cross multiply
    198,649.45x = 274,147.91 × 112,615.30
  4. Step 4: Simplify right side
    198,649.45x = 30,873,249,129.02
  5. Step 5: Solve for x
    x = 30,873,249,129.02/198,649.45
  6. Step 6: Final answer
    x = 155,415.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.