Home / 202,012.23-278,777.45-121,485.88

Finding the Fourth Proportional to 202,012.23, 278,777.45 and 121,485.88

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Solution

The fourth proportional to 202,012.23, 278,777.45 and 121,485.88 is: 167,650.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,012.23 : 278,777.45 = 121,485.88 : x
  2. Step 2: Convert to fraction form
    202,012.23/278,777.45 = 121,485.88/x
  3. Step 3: Cross multiply
    202,012.23x = 278,777.45 × 121,485.88
  4. Step 4: Simplify right side
    202,012.23x = 33,867,521,836.09
  5. Step 5: Solve for x
    x = 33,867,521,836.09/202,012.23
  6. Step 6: Final answer
    x = 167,650.85

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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.