Home / 131,728.74-181,786.21-71,299.36

Finding the Fourth Proportional to 131,728.74, 181,786.21 and 71,299.36

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Solution

The fourth proportional to 131,728.74, 181,786.21 and 71,299.36 is: 98,393.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,728.74 : 181,786.21 = 71,299.36 : x
  2. Step 2: Convert to fraction form
    131,728.74/181,786.21 = 71,299.36/x
  3. Step 3: Cross multiply
    131,728.74x = 181,786.21 × 71,299.36
  4. Step 4: Simplify right side
    131,728.74x = 12,961,240,429.83
  5. Step 5: Solve for x
    x = 12,961,240,429.83/131,728.74
  6. Step 6: Final answer
    x = 98,393.41

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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.