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Finding the Fourth Proportional to 177,243.30, 265,915.20 and 72,137.70

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Solution

The fourth proportional to 177,243.30, 265,915.20 and 72,137.70 is: 108,227.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,243.30 : 265,915.20 = 72,137.70 : x
  2. Step 2: Convert to fraction form
    177,243.30/265,915.20 = 72,137.70/x
  3. Step 3: Cross multiply
    177,243.30x = 265,915.20 × 72,137.70
  4. Step 4: Simplify right side
    177,243.30x = 19,182,510,923.04
  5. Step 5: Solve for x
    x = 19,182,510,923.04/177,243.30
  6. Step 6: Final answer
    x = 108,227.00

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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.