Home / 201,913.28-278,642.18-111,272.48

Finding the Fourth Proportional to 201,913.28, 278,642.18 and 111,272.48

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Solution

The fourth proportional to 201,913.28, 278,642.18 and 111,272.48 is: 153,557.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,913.28 : 278,642.18 = 111,272.48 : x
  2. Step 2: Convert to fraction form
    201,913.28/278,642.18 = 111,272.48/x
  3. Step 3: Cross multiply
    201,913.28x = 278,642.18 × 111,272.48
  4. Step 4: Simplify right side
    201,913.28x = 31,005,206,401.21
  5. Step 5: Solve for x
    x = 31,005,206,401.21/201,913.28
  6. Step 6: Final answer
    x = 153,557.04

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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.