Home / 157,845.30-217,831.20-86,226.51

Finding the Fourth Proportional to 157,845.30, 217,831.20 and 86,226.51

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Solution

The fourth proportional to 157,845.30, 217,831.20 and 86,226.51 is: 118,995.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,845.30 : 217,831.20 = 86,226.51 : x
  2. Step 2: Convert to fraction form
    157,845.30/217,831.20 = 86,226.51/x
  3. Step 3: Cross multiply
    157,845.30x = 217,831.20 × 86,226.51
  4. Step 4: Simplify right side
    157,845.30x = 18,782,824,145.11
  5. Step 5: Solve for x
    x = 18,782,824,145.11/157,845.30
  6. Step 6: Final answer
    x = 118,995.14

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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.