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Finding the Fourth Proportional to 201,851.75, 278,555.42 and 112,427.75

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Solution

The fourth proportional to 201,851.75, 278,555.42 and 112,427.75 is: 155,150.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,851.75 : 278,555.42 = 112,427.75 : x
  2. Step 2: Convert to fraction form
    201,851.75/278,555.42 = 112,427.75/x
  3. Step 3: Cross multiply
    201,851.75x = 278,555.42 × 112,427.75
  4. Step 4: Simplify right side
    201,851.75x = 31,317,359,120.91
  5. Step 5: Solve for x
    x = 31,317,359,120.91/201,851.75
  6. Step 6: Final answer
    x = 155,150.30

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1.5x scale

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.