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Finding the Fourth Proportional to 167,421.42, 231,044.05 and 90,942.01

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Solution

The fourth proportional to 167,421.42, 231,044.05 and 90,942.01 is: 125,501.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,421.42 : 231,044.05 = 90,942.01 : x
  2. Step 2: Convert to fraction form
    167,421.42/231,044.05 = 90,942.01/x
  3. Step 3: Cross multiply
    167,421.42x = 231,044.05 × 90,942.01
  4. Step 4: Simplify right side
    167,421.42x = 21,011,609,330.06
  5. Step 5: Solve for x
    x = 21,011,609,330.06/167,421.42
  6. Step 6: Final answer
    x = 125,501.32

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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.