Home / 113,890.80-170,836.20-100,768.80

Finding the Fourth Proportional to 113,890.80, 170,836.20 and 100,768.80

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Solution

The fourth proportional to 113,890.80, 170,836.20 and 100,768.80 is: 151,153.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,890.80 : 170,836.20 = 100,768.80 : x
  2. Step 2: Convert to fraction form
    113,890.80/170,836.20 = 100,768.80/x
  3. Step 3: Cross multiply
    113,890.80x = 170,836.20 × 100,768.80
  4. Step 4: Simplify right side
    113,890.80x = 17,214,958,870.56
  5. Step 5: Solve for x
    x = 17,214,958,870.56/113,890.80
  6. Step 6: Final answer
    x = 151,153.20

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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.