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Finding the Fourth Proportional to 181,311.66, 272,056.59 and 81,542.34

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Solution

The fourth proportional to 181,311.66, 272,056.59 and 81,542.34 is: 122,353.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,311.66 : 272,056.59 = 81,542.34 : x
  2. Step 2: Convert to fraction form
    181,311.66/272,056.59 = 81,542.34/x
  3. Step 3: Cross multiply
    181,311.66x = 272,056.59 × 81,542.34
  4. Step 4: Simplify right side
    181,311.66x = 22,184,130,961.02
  5. Step 5: Solve for x
    x = 22,184,130,961.02/181,311.66
  6. Step 6: Final answer
    x = 122,353.58

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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.