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Finding the Fourth Proportional to 201,812.75, 278,534.40 and 116,979.02

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Solution

The fourth proportional to 201,812.75, 278,534.40 and 116,979.02 is: 161,450.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,812.75 : 278,534.40 = 116,979.02 : x
  2. Step 2: Convert to fraction form
    201,812.75/278,534.40 = 116,979.02/x
  3. Step 3: Cross multiply
    201,812.75x = 278,534.40 × 116,979.02
  4. Step 4: Simplify right side
    201,812.75x = 32,582,681,148.29
  5. Step 5: Solve for x
    x = 32,582,681,148.29/201,812.75
  6. Step 6: Final answer
    x = 161,450.06

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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.