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Finding the Fourth Proportional to 163,978.79, 245,968.23 and 126,593.44

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Solution

The fourth proportional to 163,978.79, 245,968.23 and 126,593.44 is: 189,890.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,978.79 : 245,968.23 = 126,593.44 : x
  2. Step 2: Convert to fraction form
    163,978.79/245,968.23 = 126,593.44/x
  3. Step 3: Cross multiply
    163,978.79x = 245,968.23 × 126,593.44
  4. Step 4: Simplify right side
    163,978.79x = 31,137,963,136.57
  5. Step 5: Solve for x
    x = 31,137,963,136.57/163,978.79
  6. Step 6: Final answer
    x = 189,890.19

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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.