Home / 130,040.13-179,453.01-72,680.52

Finding the Fourth Proportional to 130,040.13, 179,453.01 and 72,680.52

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Solution

The fourth proportional to 130,040.13, 179,453.01 and 72,680.52 is: 100,297.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,040.13 : 179,453.01 = 72,680.52 : x
  2. Step 2: Convert to fraction form
    130,040.13/179,453.01 = 72,680.52/x
  3. Step 3: Cross multiply
    130,040.13x = 179,453.01 × 72,680.52
  4. Step 4: Simplify right side
    130,040.13x = 13,042,738,082.37
  5. Step 5: Solve for x
    x = 13,042,738,082.37/130,040.13
  6. Step 6: Final answer
    x = 100,297.79

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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.