Home / 268,136.09-402,203.61-68,456.40

Finding the Fourth Proportional to 268,136.09, 402,203.61 and 68,456.40

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Solution

The fourth proportional to 268,136.09, 402,203.61 and 68,456.40 is: 102,684.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,136.09 : 402,203.61 = 68,456.40 : x
  2. Step 2: Convert to fraction form
    268,136.09/402,203.61 = 68,456.40/x
  3. Step 3: Cross multiply
    268,136.09x = 402,203.61 × 68,456.40
  4. Step 4: Simplify right side
    268,136.09x = 27,533,411,207.60
  5. Step 5: Solve for x
    x = 27,533,411,207.60/268,136.09
  6. Step 6: Final answer
    x = 102,684.47

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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.