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Finding the Fourth Proportional to 201,566.07, 278,172.66 and 115,539.36

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Solution

The fourth proportional to 201,566.07, 278,172.66 and 115,539.36 is: 159,450.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,566.07 : 278,172.66 = 115,539.36 : x
  2. Step 2: Convert to fraction form
    201,566.07/278,172.66 = 115,539.36/x
  3. Step 3: Cross multiply
    201,566.07x = 278,172.66 × 115,539.36
  4. Step 4: Simplify right side
    201,566.07x = 32,139,891,105.90
  5. Step 5: Solve for x
    x = 32,139,891,105.90/201,566.07
  6. Step 6: Final answer
    x = 159,450.90

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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.