Home / 131,724.70-181,778.25-75,137.02

Finding the Fourth Proportional to 131,724.70, 181,778.25 and 75,137.02

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Solution

The fourth proportional to 131,724.70, 181,778.25 and 75,137.02 is: 103,688.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,724.70 : 181,778.25 = 75,137.02 : x
  2. Step 2: Convert to fraction form
    131,724.70/181,778.25 = 75,137.02/x
  3. Step 3: Cross multiply
    131,724.70x = 181,778.25 × 75,137.02
  4. Step 4: Simplify right side
    131,724.70x = 13,658,276,005.82
  5. Step 5: Solve for x
    x = 13,658,276,005.82/131,724.70
  6. Step 6: Final answer
    x = 103,688.04

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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.