Home / 202,079.40-278,863.18-111,439.19

Finding the Fourth Proportional to 202,079.40, 278,863.18 and 111,439.19

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Solution

The fourth proportional to 202,079.40, 278,863.18 and 111,439.19 is: 153,782.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,079.40 : 278,863.18 = 111,439.19 : x
  2. Step 2: Convert to fraction form
    202,079.40/278,863.18 = 111,439.19/x
  3. Step 3: Cross multiply
    202,079.40x = 278,863.18 × 111,439.19
  4. Step 4: Simplify right side
    202,079.40x = 31,076,286,900.02
  5. Step 5: Solve for x
    x = 31,076,286,900.02/202,079.40
  6. Step 6: Final answer
    x = 153,782.56

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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.