Home / 202,105.28-278,918.07-111,461.42

Finding the Fourth Proportional to 202,105.28, 278,918.07 and 111,461.42

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Solution

The fourth proportional to 202,105.28, 278,918.07 and 111,461.42 is: 153,823.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,105.28 : 278,918.07 = 111,461.42 : x
  2. Step 2: Convert to fraction form
    202,105.28/278,918.07 = 111,461.42/x
  3. Step 3: Cross multiply
    202,105.28x = 278,918.07 × 111,461.42
  4. Step 4: Simplify right side
    202,105.28x = 31,088,602,751.27
  5. Step 5: Solve for x
    x = 31,088,602,751.27/202,105.28
  6. Step 6: Final answer
    x = 153,823.81

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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.