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Finding the Fourth Proportional to 117,472.70, 162,108.21 and 63,756.64

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Solution

The fourth proportional to 117,472.70, 162,108.21 and 63,756.64 is: 87,981.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,472.70 : 162,108.21 = 63,756.64 : x
  2. Step 2: Convert to fraction form
    117,472.70/162,108.21 = 63,756.64/x
  3. Step 3: Cross multiply
    117,472.70x = 162,108.21 × 63,756.64
  4. Step 4: Simplify right side
    117,472.70x = 10,335,474,786.01
  5. Step 5: Solve for x
    x = 10,335,474,786.01/117,472.70
  6. Step 6: Final answer
    x = 87,981.93

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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.