Home / 131,388.32-181,247.04-82,972.70

Finding the Fourth Proportional to 131,388.32, 181,247.04 and 82,972.70

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Solution

The fourth proportional to 131,388.32, 181,247.04 and 82,972.70 is: 114,458.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,388.32 : 181,247.04 = 82,972.70 : x
  2. Step 2: Convert to fraction form
    131,388.32/181,247.04 = 82,972.70/x
  3. Step 3: Cross multiply
    131,388.32x = 181,247.04 × 82,972.70
  4. Step 4: Simplify right side
    131,388.32x = 15,038,556,275.81
  5. Step 5: Solve for x
    x = 15,038,556,275.81/131,388.32
  6. Step 6: Final answer
    x = 114,458.85

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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.