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Finding the Fourth Proportional to 209,376.76, 314,094.09 and 67,188.59

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Solution

The fourth proportional to 209,376.76, 314,094.09 and 67,188.59 is: 100,792.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,376.76 : 314,094.09 = 67,188.59 : x
  2. Step 2: Convert to fraction form
    209,376.76/314,094.09 = 67,188.59/x
  3. Step 3: Cross multiply
    209,376.76x = 314,094.09 × 67,188.59
  4. Step 4: Simplify right side
    209,376.76x = 21,103,539,034.43
  5. Step 5: Solve for x
    x = 21,103,539,034.43/209,376.76
  6. Step 6: Final answer
    x = 100,792.17

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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.