Home / 202,021.96-278,777.19-111,378.69

Finding the Fourth Proportional to 202,021.96, 278,777.19 and 111,378.69

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Solution

The fourth proportional to 202,021.96, 278,777.19 and 111,378.69 is: 153,695.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,021.96 : 278,777.19 = 111,378.69 : x
  2. Step 2: Convert to fraction form
    202,021.96/278,777.19 = 111,378.69/x
  3. Step 3: Cross multiply
    202,021.96x = 278,777.19 × 111,378.69
  4. Step 4: Simplify right side
    202,021.96x = 31,049,838,224.08
  5. Step 5: Solve for x
    x = 31,049,838,224.08/202,021.96
  6. Step 6: Final answer
    x = 153,695.36

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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.