Home / 205,881.84-284,076.56-129,356.60

Finding the Fourth Proportional to 205,881.84, 284,076.56 and 129,356.60

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Solution

The fourth proportional to 205,881.84, 284,076.56 and 129,356.60 is: 178,486.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,881.84 : 284,076.56 = 129,356.60 : x
  2. Step 2: Convert to fraction form
    205,881.84/284,076.56 = 129,356.60/x
  3. Step 3: Cross multiply
    205,881.84x = 284,076.56 × 129,356.60
  4. Step 4: Simplify right side
    205,881.84x = 36,747,177,714.60
  5. Step 5: Solve for x
    x = 36,747,177,714.60/205,881.84
  6. Step 6: Final answer
    x = 178,486.74

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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.