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Finding the Fourth Proportional to 131,859.90, 197,638.08 and 65,343.71

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Solution

The fourth proportional to 131,859.90, 197,638.08 and 65,343.71 is: 97,940.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,859.90 : 197,638.08 = 65,343.71 : x
  2. Step 2: Convert to fraction form
    131,859.90/197,638.08 = 65,343.71/x
  3. Step 3: Cross multiply
    131,859.90x = 197,638.08 × 65,343.71
  4. Step 4: Simplify right side
    131,859.90x = 12,914,405,633.53
  5. Step 5: Solve for x
    x = 12,914,405,633.53/131,859.90
  6. Step 6: Final answer
    x = 97,940.36

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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.