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Finding the Fourth Proportional to 151,363.56, 208,881.77 and 87,738.27

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Solution

The fourth proportional to 151,363.56, 208,881.77 and 87,738.27 is: 121,078.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,363.56 : 208,881.77 = 87,738.27 : x
  2. Step 2: Convert to fraction form
    151,363.56/208,881.77 = 87,738.27/x
  3. Step 3: Cross multiply
    151,363.56x = 208,881.77 × 87,738.27
  4. Step 4: Simplify right side
    151,363.56x = 18,326,925,134.34
  5. Step 5: Solve for x
    x = 18,326,925,134.34/151,363.56
  6. Step 6: Final answer
    x = 121,078.85

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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.