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Finding the Fourth Proportional to 131,282, 181,096.21 and 86,032.97

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Solution

The fourth proportional to 131,282, 181,096.21 and 86,032.97 is: 118,677.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,282 : 181,096.21 = 86,032.97 : x
  2. Step 2: Convert to fraction form
    131,282/181,096.21 = 86,032.97/x
  3. Step 3: Cross multiply
    131,282x = 181,096.21 × 86,032.97
  4. Step 4: Simplify right side
    131,282x = 15,580,244,802.04
  5. Step 5: Solve for x
    x = 15,580,244,802.04/131,282
  6. Step 6: Final answer
    x = 118,677.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.