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Finding the Fourth Proportional to 151,062.98, 208,450.56 and 87,388.88

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Solution

The fourth proportional to 151,062.98, 208,450.56 and 87,388.88 is: 120,587.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,062.98 : 208,450.56 = 87,388.88 : x
  2. Step 2: Convert to fraction form
    151,062.98/208,450.56 = 87,388.88/x
  3. Step 3: Cross multiply
    151,062.98x = 208,450.56 × 87,388.88
  4. Step 4: Simplify right side
    151,062.98x = 18,216,260,259.23
  5. Step 5: Solve for x
    x = 18,216,260,259.23/151,062.98
  6. Step 6: Final answer
    x = 120,587.19

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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.