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Finding the Fourth Proportional to 181,316.58, 271,881.02 and 81,390.74

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Solution

The fourth proportional to 181,316.58, 271,881.02 and 81,390.74 is: 122,043.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,316.58 : 271,881.02 = 81,390.74 : x
  2. Step 2: Convert to fraction form
    181,316.58/271,881.02 = 81,390.74/x
  3. Step 3: Cross multiply
    181,316.58x = 271,881.02 × 81,390.74
  4. Step 4: Simplify right side
    181,316.58x = 22,128,597,409.75
  5. Step 5: Solve for x
    x = 22,128,597,409.75/181,316.58
  6. Step 6: Final answer
    x = 122,043.98

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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.