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Finding the Fourth Proportional to 181,277.80, 271,916.70 and 81,485.80

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Solution

The fourth proportional to 181,277.80, 271,916.70 and 81,485.80 is: 122,228.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,277.80 : 271,916.70 = 81,485.80 : x
  2. Step 2: Convert to fraction form
    181,277.80/271,916.70 = 81,485.80/x
  3. Step 3: Cross multiply
    181,277.80x = 271,916.70 × 81,485.80
  4. Step 4: Simplify right side
    181,277.80x = 22,157,349,832.86
  5. Step 5: Solve for x
    x = 22,157,349,832.86/181,277.80
  6. Step 6: Final answer
    x = 122,228.70

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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.