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Finding the Fourth Proportional to 170,691.75, 255,969.17 and 70,784.07

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Solution

The fourth proportional to 170,691.75, 255,969.17 and 70,784.07 is: 106,147.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,691.75 : 255,969.17 = 70,784.07 : x
  2. Step 2: Convert to fraction form
    170,691.75/255,969.17 = 70,784.07/x
  3. Step 3: Cross multiply
    170,691.75x = 255,969.17 × 70,784.07
  4. Step 4: Simplify right side
    170,691.75x = 18,118,539,293.20
  5. Step 5: Solve for x
    x = 18,118,539,293.20/170,691.75
  6. Step 6: Final answer
    x = 106,147.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.