Home / 157,845.10-217,831.50-86,231.80

Finding the Fourth Proportional to 157,845.10, 217,831.50 and 86,231.80

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Solution

The fourth proportional to 157,845.10, 217,831.50 and 86,231.80 is: 119,002.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,845.10 : 217,831.50 = 86,231.80 : x
  2. Step 2: Convert to fraction form
    157,845.10/217,831.50 = 86,231.80/x
  3. Step 3: Cross multiply
    157,845.10x = 217,831.50 × 86,231.80
  4. Step 4: Simplify right side
    157,845.10x = 18,784,002,341.70
  5. Step 5: Solve for x
    x = 18,784,002,341.70/157,845.10
  6. Step 6: Final answer
    x = 119,002.76

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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.