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Finding the Fourth Proportional to 118,813.20, 163,962.27 and 65,100.30

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Solution

The fourth proportional to 118,813.20, 163,962.27 and 65,100.30 is: 89,838.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,813.20 : 163,962.27 = 65,100.30 : x
  2. Step 2: Convert to fraction form
    118,813.20/163,962.27 = 65,100.30/x
  3. Step 3: Cross multiply
    118,813.20x = 163,962.27 × 65,100.30
  4. Step 4: Simplify right side
    118,813.20x = 10,673,992,965.68
  5. Step 5: Solve for x
    x = 10,673,992,965.68/118,813.20
  6. Step 6: Final answer
    x = 89,838.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.