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Finding the Fourth Proportional to 99,163.35, 136,794.72 and 63,315.67

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Solution

The fourth proportional to 99,163.35, 136,794.72 and 63,315.67 is: 87,343.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,163.35 : 136,794.72 = 63,315.67 : x
  2. Step 2: Convert to fraction form
    99,163.35/136,794.72 = 63,315.67/x
  3. Step 3: Cross multiply
    99,163.35x = 136,794.72 × 63,315.67
  4. Step 4: Simplify right side
    99,163.35x = 8,661,248,928.13
  5. Step 5: Solve for x
    x = 8,661,248,928.13/99,163.35
  6. Step 6: Final answer
    x = 87,343.25

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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.