Home / 113,539.80-170,309.70-100,855.20

Finding the Fourth Proportional to 113,539.80, 170,309.70 and 100,855.20

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Solution

The fourth proportional to 113,539.80, 170,309.70 and 100,855.20 is: 151,282.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,539.80 : 170,309.70 = 100,855.20 : x
  2. Step 2: Convert to fraction form
    113,539.80/170,309.70 = 100,855.20/x
  3. Step 3: Cross multiply
    113,539.80x = 170,309.70 × 100,855.20
  4. Step 4: Simplify right side
    113,539.80x = 17,176,618,855.44
  5. Step 5: Solve for x
    x = 17,176,618,855.44/113,539.80
  6. Step 6: Final answer
    x = 151,282.80

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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.