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Finding the Fourth Proportional to 163,398.31, 245,136.88 and 56,766.74

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Solution

The fourth proportional to 163,398.31, 245,136.88 and 56,766.74 is: 85,163.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,398.31 : 245,136.88 = 56,766.74 : x
  2. Step 2: Convert to fraction form
    163,398.31/245,136.88 = 56,766.74/x
  3. Step 3: Cross multiply
    163,398.31x = 245,136.88 × 56,766.74
  4. Step 4: Simplify right side
    163,398.31x = 13,915,621,755.54
  5. Step 5: Solve for x
    x = 13,915,621,755.54/163,398.31
  6. Step 6: Final answer
    x = 85,163.80

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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.