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Finding the Fourth Proportional to 151,301.48, 208,764.40 and 87,635.48

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Solution

The fourth proportional to 151,301.48, 208,764.40 and 87,635.48 is: 120,918.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,301.48 : 208,764.40 = 87,635.48 : x
  2. Step 2: Convert to fraction form
    151,301.48/208,764.40 = 87,635.48/x
  3. Step 3: Cross multiply
    151,301.48x = 208,764.40 × 87,635.48
  4. Step 4: Simplify right side
    151,301.48x = 18,295,168,400.91
  5. Step 5: Solve for x
    x = 18,295,168,400.91/151,301.48
  6. Step 6: Final answer
    x = 120,918.63

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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.