Home / 137,147.99-189,288.50-80,559.36

Finding the Fourth Proportional to 137,147.99, 189,288.50 and 80,559.36

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Solution

The fourth proportional to 137,147.99, 189,288.50 and 80,559.36 is: 111,186.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,147.99 : 189,288.50 = 80,559.36 : x
  2. Step 2: Convert to fraction form
    137,147.99/189,288.50 = 80,559.36/x
  3. Step 3: Cross multiply
    137,147.99x = 189,288.50 × 80,559.36
  4. Step 4: Simplify right side
    137,147.99x = 15,248,960,012.56
  5. Step 5: Solve for x
    x = 15,248,960,012.56/137,147.99
  6. Step 6: Final answer
    x = 111,186.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.