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Finding the Fourth Proportional to 207,968.72, 286,996.91 and 112,475.43

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Solution

The fourth proportional to 207,968.72, 286,996.91 and 112,475.43 is: 155,216.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,968.72 : 286,996.91 = 112,475.43 : x
  2. Step 2: Convert to fraction form
    207,968.72/286,996.91 = 112,475.43/x
  3. Step 3: Cross multiply
    207,968.72x = 286,996.91 × 112,475.43
  4. Step 4: Simplify right side
    207,968.72x = 32,280,100,298.54
  5. Step 5: Solve for x
    x = 32,280,100,298.54/207,968.72
  6. Step 6: Final answer
    x = 155,216.14

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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.