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Finding the Fourth Proportional to 108,712.80, 163,069.20 and 75,535.20

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Solution

The fourth proportional to 108,712.80, 163,069.20 and 75,535.20 is: 113,302.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,712.80 : 163,069.20 = 75,535.20 : x
  2. Step 2: Convert to fraction form
    108,712.80/163,069.20 = 75,535.20/x
  3. Step 3: Cross multiply
    108,712.80x = 163,069.20 × 75,535.20
  4. Step 4: Simplify right side
    108,712.80x = 12,317,464,635.84
  5. Step 5: Solve for x
    x = 12,317,464,635.84/108,712.80
  6. Step 6: Final answer
    x = 113,302.80

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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.