Home / 205,486.06-283,490.67-128,960.50

Finding the Fourth Proportional to 205,486.06, 283,490.67 and 128,960.50

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Solution

The fourth proportional to 205,486.06, 283,490.67 and 128,960.50 is: 177,915.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,486.06 : 283,490.67 = 128,960.50 : x
  2. Step 2: Convert to fraction form
    205,486.06/283,490.67 = 128,960.50/x
  3. Step 3: Cross multiply
    205,486.06x = 283,490.67 × 128,960.50
  4. Step 4: Simplify right side
    205,486.06x = 36,559,098,548.54
  5. Step 5: Solve for x
    x = 36,559,098,548.54/205,486.06
  6. Step 6: Final answer
    x = 177,915.22

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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.