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Finding the Fourth Proportional to 178,959.31, 268,242.12 and 73,720.87

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Solution

The fourth proportional to 178,959.31, 268,242.12 and 73,720.87 is: 110,500.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,959.31 : 268,242.12 = 73,720.87 : x
  2. Step 2: Convert to fraction form
    178,959.31/268,242.12 = 73,720.87/x
  3. Step 3: Cross multiply
    178,959.31x = 268,242.12 × 73,720.87
  4. Step 4: Simplify right side
    178,959.31x = 19,775,042,457.04
  5. Step 5: Solve for x
    x = 19,775,042,457.04/178,959.31
  6. Step 6: Final answer
    x = 110,500.22

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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.