Home / 202,015.15-278,778.72-111,368.86

Finding the Fourth Proportional to 202,015.15, 278,778.72 and 111,368.86

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Solution

The fourth proportional to 202,015.15, 278,778.72 and 111,368.86 is: 153,687.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,015.15 : 278,778.72 = 111,368.86 : x
  2. Step 2: Convert to fraction form
    202,015.15/278,778.72 = 111,368.86/x
  3. Step 3: Cross multiply
    202,015.15x = 278,778.72 × 111,368.86
  4. Step 4: Simplify right side
    202,015.15x = 31,047,268,238.66
  5. Step 5: Solve for x
    x = 31,047,268,238.66/202,015.15
  6. Step 6: Final answer
    x = 153,687.82

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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.