Home / 151,356.98-208,872.69-87,731.66

Finding the Fourth Proportional to 151,356.98, 208,872.69 and 87,731.66

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Solution

The fourth proportional to 151,356.98, 208,872.69 and 87,731.66 is: 121,069.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,356.98 : 208,872.69 = 87,731.66 : x
  2. Step 2: Convert to fraction form
    151,356.98/208,872.69 = 87,731.66/x
  3. Step 3: Cross multiply
    151,356.98x = 208,872.69 × 87,731.66
  4. Step 4: Simplify right side
    151,356.98x = 18,324,747,822.37
  5. Step 5: Solve for x
    x = 18,324,747,822.37/151,356.98
  6. Step 6: Final answer
    x = 121,069.72

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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.