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Finding the Fourth Proportional to 181,988.82, 272,798.46 and 69,640.20

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Solution

The fourth proportional to 181,988.82, 272,798.46 and 69,640.20 is: 104,389.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,988.82 : 272,798.46 = 69,640.20 : x
  2. Step 2: Convert to fraction form
    181,988.82/272,798.46 = 69,640.20/x
  3. Step 3: Cross multiply
    181,988.82x = 272,798.46 × 69,640.20
  4. Step 4: Simplify right side
    181,988.82x = 18,997,739,314.09
  5. Step 5: Solve for x
    x = 18,997,739,314.09/181,988.82
  6. Step 6: Final answer
    x = 104,389.60

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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.