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Finding the Fourth Proportional to 177,940.80, 266,781.60 and 72,705.60

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Solution

The fourth proportional to 177,940.80, 266,781.60 and 72,705.60 is: 109,005.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,940.80 : 266,781.60 = 72,705.60 : x
  2. Step 2: Convert to fraction form
    177,940.80/266,781.60 = 72,705.60/x
  3. Step 3: Cross multiply
    177,940.80x = 266,781.60 × 72,705.60
  4. Step 4: Simplify right side
    177,940.80x = 19,396,516,296.96
  5. Step 5: Solve for x
    x = 19,396,516,296.96/177,940.80
  6. Step 6: Final answer
    x = 109,005.45

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1.5x scale

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.