Home / 201,971.10-278,716.76-111,335.48

Finding the Fourth Proportional to 201,971.10, 278,716.76 and 111,335.48

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Solution

The fourth proportional to 201,971.10, 278,716.76 and 111,335.48 is: 153,641.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,971.10 : 278,716.76 = 111,335.48 : x
  2. Step 2: Convert to fraction form
    201,971.10/278,716.76 = 111,335.48/x
  3. Step 3: Cross multiply
    201,971.10x = 278,716.76 × 111,335.48
  4. Step 4: Simplify right side
    201,971.10x = 31,031,063,771.08
  5. Step 5: Solve for x
    x = 31,031,063,771.08/201,971.10
  6. Step 6: Final answer
    x = 153,641.11

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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.