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Finding the Fourth Proportional to 168,809.55, 253,214.33 and 68,904.15

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Solution

The fourth proportional to 168,809.55, 253,214.33 and 68,904.15 is: 103,356.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,809.55 : 253,214.33 = 68,904.15 : x
  2. Step 2: Convert to fraction form
    168,809.55/253,214.33 = 68,904.15/x
  3. Step 3: Cross multiply
    168,809.55x = 253,214.33 × 68,904.15
  4. Step 4: Simplify right side
    168,809.55x = 17,447,517,831.95
  5. Step 5: Solve for x
    x = 17,447,517,831.95/168,809.55
  6. Step 6: Final answer
    x = 103,356.23

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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.