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Finding the Fourth Proportional to 163,914.70, 245,880.15 and 85,182.70

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Solution

The fourth proportional to 163,914.70, 245,880.15 and 85,182.70 is: 127,778.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,914.70 : 245,880.15 = 85,182.70 : x
  2. Step 2: Convert to fraction form
    163,914.70/245,880.15 = 85,182.70/x
  3. Step 3: Cross multiply
    163,914.70x = 245,880.15 × 85,182.70
  4. Step 4: Simplify right side
    163,914.70x = 20,944,735,053.41
  5. Step 5: Solve for x
    x = 20,944,735,053.41/163,914.70
  6. Step 6: Final answer
    x = 127,778.26

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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.