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Finding the Fourth Proportional to 167,685.76, 231,330.02 and 99,664.08

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Solution

The fourth proportional to 167,685.76, 231,330.02 and 99,664.08 is: 137,491.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,685.76 : 231,330.02 = 99,664.08 : x
  2. Step 2: Convert to fraction form
    167,685.76/231,330.02 = 99,664.08/x
  3. Step 3: Cross multiply
    167,685.76x = 231,330.02 × 99,664.08
  4. Step 4: Simplify right side
    167,685.76x = 23,055,292,253.87
  5. Step 5: Solve for x
    x = 23,055,292,253.87/167,685.76
  6. Step 6: Final answer
    x = 137,491.06

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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.