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Finding the Fourth Proportional to 157,940.34, 236,954.52 and 87,868.86

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Solution

The fourth proportional to 157,940.34, 236,954.52 and 87,868.86 is: 131,827.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,940.34 : 236,954.52 = 87,868.86 : x
  2. Step 2: Convert to fraction form
    157,940.34/236,954.52 = 87,868.86/x
  3. Step 3: Cross multiply
    157,940.34x = 236,954.52 × 87,868.86
  4. Step 4: Simplify right side
    157,940.34x = 20,820,923,544.25
  5. Step 5: Solve for x
    x = 20,820,923,544.25/157,940.34
  6. Step 6: Final answer
    x = 131,827.77

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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.