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Finding the Fourth Proportional to 131,063.37, 180,493.11 and 118,031.68

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Solution

The fourth proportional to 131,063.37, 180,493.11 and 118,031.68 is: 162,546.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,063.37 : 180,493.11 = 118,031.68 : x
  2. Step 2: Convert to fraction form
    131,063.37/180,493.11 = 118,031.68/x
  3. Step 3: Cross multiply
    131,063.37x = 180,493.11 × 118,031.68
  4. Step 4: Simplify right side
    131,063.37x = 21,303,905,227.34
  5. Step 5: Solve for x
    x = 21,303,905,227.34/131,063.37
  6. Step 6: Final answer
    x = 162,546.61

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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.