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Finding the Fourth Proportional to 163,079.70, 244,619.55 and 78,880.20

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Solution

The fourth proportional to 163,079.70, 244,619.55 and 78,880.20 is: 118,320.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,079.70 : 244,619.55 = 78,880.20 : x
  2. Step 2: Convert to fraction form
    163,079.70/244,619.55 = 78,880.20/x
  3. Step 3: Cross multiply
    163,079.70x = 244,619.55 × 78,880.20
  4. Step 4: Simplify right side
    163,079.70x = 19,295,639,027.91
  5. Step 5: Solve for x
    x = 19,295,639,027.91/163,079.70
  6. Step 6: Final answer
    x = 118,320.30

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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.