Home / 204,988.30-282,699.66-128,515.74

Finding the Fourth Proportional to 204,988.30, 282,699.66 and 128,515.74

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Solution

The fourth proportional to 204,988.30, 282,699.66 and 128,515.74 is: 177,236.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,988.30 : 282,699.66 = 128,515.74 : x
  2. Step 2: Convert to fraction form
    204,988.30/282,699.66 = 128,515.74/x
  3. Step 3: Cross multiply
    204,988.30x = 282,699.66 × 128,515.74
  4. Step 4: Simplify right side
    204,988.30x = 36,331,355,424.46
  5. Step 5: Solve for x
    x = 36,331,355,424.46/204,988.30
  6. Step 6: Final answer
    x = 177,236.24

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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.