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Finding the Fourth Proportional to 105,624.87, 158,330.62 and 66,209.64

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Solution

The fourth proportional to 105,624.87, 158,330.62 and 66,209.64 is: 99,247.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,624.87 : 158,330.62 = 66,209.64 : x
  2. Step 2: Convert to fraction form
    105,624.87/158,330.62 = 66,209.64/x
  3. Step 3: Cross multiply
    105,624.87x = 158,330.62 × 66,209.64
  4. Step 4: Simplify right side
    105,624.87x = 10,483,013,351.18
  5. Step 5: Solve for x
    x = 10,483,013,351.18/105,624.87
  6. Step 6: Final answer
    x = 99,247.59

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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.