Home / 201,844.13-278,544.90-112,420.13

Finding the Fourth Proportional to 201,844.13, 278,544.90 and 112,420.13

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Solution

The fourth proportional to 201,844.13, 278,544.90 and 112,420.13 is: 155,139.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,844.13 : 278,544.90 = 112,420.13 : x
  2. Step 2: Convert to fraction form
    201,844.13/278,544.90 = 112,420.13/x
  3. Step 3: Cross multiply
    201,844.13x = 278,544.90 × 112,420.13
  4. Step 4: Simplify right side
    201,844.13x = 31,314,053,868.84
  5. Step 5: Solve for x
    x = 31,314,053,868.84/201,844.13
  6. Step 6: Final answer
    x = 155,139.78

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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.