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Finding the Fourth Proportional to 108,961.80, 163,410.30 and 42,363.60

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Solution

The fourth proportional to 108,961.80, 163,410.30 and 42,363.60 is: 63,532.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,961.80 : 163,410.30 = 42,363.60 : x
  2. Step 2: Convert to fraction form
    108,961.80/163,410.30 = 42,363.60/x
  3. Step 3: Cross multiply
    108,961.80x = 163,410.30 × 42,363.60
  4. Step 4: Simplify right side
    108,961.80x = 6,922,648,585.08
  5. Step 5: Solve for x
    x = 6,922,648,585.08/108,961.80
  6. Step 6: Final answer
    x = 63,532.80

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1.5x scale

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.