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Finding the Fourth Proportional to 140,161.32, 210,239.55 and 65,239.56

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Solution

The fourth proportional to 140,161.32, 210,239.55 and 65,239.56 is: 97,858.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,161.32 : 210,239.55 = 65,239.56 : x
  2. Step 2: Convert to fraction form
    140,161.32/210,239.55 = 65,239.56/x
  3. Step 3: Cross multiply
    140,161.32x = 210,239.55 × 65,239.56
  4. Step 4: Simplify right side
    140,161.32x = 13,715,935,736.60
  5. Step 5: Solve for x
    x = 13,715,935,736.60/140,161.32
  6. Step 6: Final answer
    x = 97,858.21

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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.