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Finding the Fourth Proportional to 151,194.69, 208,648.62 and 87,531.12

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Solution

The fourth proportional to 151,194.69, 208,648.62 and 87,531.12 is: 120,792.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,194.69 : 208,648.62 = 87,531.12 : x
  2. Step 2: Convert to fraction form
    151,194.69/208,648.62 = 87,531.12/x
  3. Step 3: Cross multiply
    151,194.69x = 208,648.62 × 87,531.12
  4. Step 4: Simplify right side
    151,194.69x = 18,263,247,395.05
  5. Step 5: Solve for x
    x = 18,263,247,395.05/151,194.69
  6. Step 6: Final answer
    x = 120,792.92

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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.