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Finding the Fourth Proportional to 118,252.56, 177,378.84 and 68,970

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Solution

The fourth proportional to 118,252.56, 177,378.84 and 68,970 is: 103,455

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,252.56 : 177,378.84 = 68,970 : x
  2. Step 2: Convert to fraction form
    118,252.56/177,378.84 = 68,970/x
  3. Step 3: Cross multiply
    118,252.56x = 177,378.84 × 68,970
  4. Step 4: Simplify right side
    118,252.56x = 12,233,818,594.80
  5. Step 5: Solve for x
    x = 12,233,818,594.80/118,252.56
  6. Step 6: Final answer
    x = 103,455

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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.