Home / 147,121.57-220,903.78-84,012.94

Finding the Fourth Proportional to 147,121.57, 220,903.78 and 84,012.94

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Solution

The fourth proportional to 147,121.57, 220,903.78 and 84,012.94 is: 126,145.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,121.57 : 220,903.78 = 84,012.94 : x
  2. Step 2: Convert to fraction form
    147,121.57/220,903.78 = 84,012.94/x
  3. Step 3: Cross multiply
    147,121.57x = 220,903.78 × 84,012.94
  4. Step 4: Simplify right side
    147,121.57x = 18,558,776,014.91
  5. Step 5: Solve for x
    x = 18,558,776,014.91/147,121.57
  6. Step 6: Final answer
    x = 126,145.85

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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.