Home / 208,010.42-311,732.89-87,967.58

Finding the Fourth Proportional to 208,010.42, 311,732.89 and 87,967.58

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Solution

The fourth proportional to 208,010.42, 311,732.89 and 87,967.58 is: 131,831.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,010.42 : 311,732.89 = 87,967.58 : x
  2. Step 2: Convert to fraction form
    208,010.42/311,732.89 = 87,967.58/x
  3. Step 3: Cross multiply
    208,010.42x = 311,732.89 × 87,967.58
  4. Step 4: Simplify right side
    208,010.42x = 27,422,387,939.71
  5. Step 5: Solve for x
    x = 27,422,387,939.71/208,010.42
  6. Step 6: Final answer
    x = 131,831.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.