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Finding the Fourth Proportional to 177,717.80, 266,139.30 and 118,231.40

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Solution

The fourth proportional to 177,717.80, 266,139.30 and 118,231.40 is: 177,056.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,717.80 : 266,139.30 = 118,231.40 : x
  2. Step 2: Convert to fraction form
    177,717.80/266,139.30 = 118,231.40/x
  3. Step 3: Cross multiply
    177,717.80x = 266,139.30 × 118,231.40
  4. Step 4: Simplify right side
    177,717.80x = 31,466,022,034.02
  5. Step 5: Solve for x
    x = 31,466,022,034.02/177,717.80
  6. Step 6: Final answer
    x = 177,056.11

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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.