Home / 208,631.85-312,934.81-66,473.61

Finding the Fourth Proportional to 208,631.85, 312,934.81 and 66,473.61

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Solution

The fourth proportional to 208,631.85, 312,934.81 and 66,473.61 is: 99,706.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,631.85 : 312,934.81 = 66,473.61 : x
  2. Step 2: Convert to fraction form
    208,631.85/312,934.81 = 66,473.61/x
  3. Step 3: Cross multiply
    208,631.85x = 312,934.81 × 66,473.61
  4. Step 4: Simplify right side
    208,631.85x = 20,801,906,515.36
  5. Step 5: Solve for x
    x = 20,801,906,515.36/208,631.85
  6. Step 6: Final answer
    x = 99,706.28

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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.