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Finding the Fourth Proportional to 177,187.80, 265,775.30 and 72,003.80

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Solution

The fourth proportional to 177,187.80, 265,775.30 and 72,003.80 is: 108,003.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,187.80 : 265,775.30 = 72,003.80 : x
  2. Step 2: Convert to fraction form
    177,187.80/265,775.30 = 72,003.80/x
  3. Step 3: Cross multiply
    177,187.80x = 265,775.30 × 72,003.80
  4. Step 4: Simplify right side
    177,187.80x = 19,136,831,546.14
  5. Step 5: Solve for x
    x = 19,136,831,546.14/177,187.80
  6. Step 6: Final answer
    x = 108,003.10

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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.