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Finding the Fourth Proportional to 178,871.12, 268,362.84 and 73,739.60

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Solution

The fourth proportional to 178,871.12, 268,362.84 and 73,739.60 is: 110,632.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,871.12 : 268,362.84 = 73,739.60 : x
  2. Step 2: Convert to fraction form
    178,871.12/268,362.84 = 73,739.60/x
  3. Step 3: Cross multiply
    178,871.12x = 268,362.84 × 73,739.60
  4. Step 4: Simplify right side
    178,871.12x = 19,788,968,476.46
  5. Step 5: Solve for x
    x = 19,788,968,476.46/178,871.12
  6. Step 6: Final answer
    x = 110,632.55

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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.