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Finding the Fourth Proportional to 170,504.14, 255,913.95 and 86,323.45

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Solution

The fourth proportional to 170,504.14, 255,913.95 and 86,323.45 is: 129,565.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,504.14 : 255,913.95 = 86,323.45 : x
  2. Step 2: Convert to fraction form
    170,504.14/255,913.95 = 86,323.45/x
  3. Step 3: Cross multiply
    170,504.14x = 255,913.95 × 86,323.45
  4. Step 4: Simplify right side
    170,504.14x = 22,091,375,067.13
  5. Step 5: Solve for x
    x = 22,091,375,067.13/170,504.14
  6. Step 6: Final answer
    x = 129,565.04

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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.