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Finding the Fourth Proportional to 201,517.48, 278,128.92 and 116,681.32

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Solution

The fourth proportional to 201,517.48, 278,128.92 and 116,681.32 is: 161,040.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,517.48 : 278,128.92 = 116,681.32 : x
  2. Step 2: Convert to fraction form
    201,517.48/278,128.92 = 116,681.32/x
  3. Step 3: Cross multiply
    201,517.48x = 278,128.92 × 116,681.32
  4. Step 4: Simplify right side
    201,517.48x = 32,452,449,515.77
  5. Step 5: Solve for x
    x = 32,452,449,515.77/201,517.48
  6. Step 6: Final answer
    x = 161,040.37

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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.