Home / 131,231.76-196,889.06-99,792.40

Finding the Fourth Proportional to 131,231.76, 196,889.06 and 99,792.40

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Solution

The fourth proportional to 131,231.76, 196,889.06 and 99,792.40 is: 149,720.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,231.76 : 196,889.06 = 99,792.40 : x
  2. Step 2: Convert to fraction form
    131,231.76/196,889.06 = 99,792.40/x
  3. Step 3: Cross multiply
    131,231.76x = 196,889.06 × 99,792.40
  4. Step 4: Simplify right side
    131,231.76x = 19,648,031,831.14
  5. Step 5: Solve for x
    x = 19,648,031,831.14/131,231.76
  6. Step 6: Final answer
    x = 149,720.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.