Home / 108,725.20-163,087.80-99,539.80

Finding the Fourth Proportional to 108,725.20, 163,087.80 and 99,539.80

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Solution

The fourth proportional to 108,725.20, 163,087.80 and 99,539.80 is: 149,309.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,725.20 : 163,087.80 = 99,539.80 : x
  2. Step 2: Convert to fraction form
    108,725.20/163,087.80 = 99,539.80/x
  3. Step 3: Cross multiply
    108,725.20x = 163,087.80 × 99,539.80
  4. Step 4: Simplify right side
    108,725.20x = 16,233,726,994.44
  5. Step 5: Solve for x
    x = 16,233,726,994.44/108,725.20
  6. Step 6: Final answer
    x = 149,309.70

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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.