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Finding the Fourth Proportional to 181,505.90, 272,222.40 and 86,735.90

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Solution

The fourth proportional to 181,505.90, 272,222.40 and 86,735.90 is: 130,086.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,505.90 : 272,222.40 = 86,735.90 : x
  2. Step 2: Convert to fraction form
    181,505.90/272,222.40 = 86,735.90/x
  3. Step 3: Cross multiply
    181,505.90x = 272,222.40 × 86,735.90
  4. Step 4: Simplify right side
    181,505.90x = 23,611,454,864.16
  5. Step 5: Solve for x
    x = 23,611,454,864.16/181,505.90
  6. Step 6: Final answer
    x = 130,086.43

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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.