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Finding the Fourth Proportional to 151,245.36, 208,695.44 and 87,570.86

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Solution

The fourth proportional to 151,245.36, 208,695.44 and 87,570.86 is: 120,834.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,245.36 : 208,695.44 = 87,570.86 : x
  2. Step 2: Convert to fraction form
    151,245.36/208,695.44 = 87,570.86/x
  3. Step 3: Cross multiply
    151,245.36x = 208,695.44 × 87,570.86
  4. Step 4: Simplify right side
    151,245.36x = 18,275,638,334.33
  5. Step 5: Solve for x
    x = 18,275,638,334.33/151,245.36
  6. Step 6: Final answer
    x = 120,834.37

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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.