Home / 157,438.86-236,138.85-68,753.58

Finding the Fourth Proportional to 157,438.86, 236,138.85 and 68,753.58

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Solution

The fourth proportional to 157,438.86, 236,138.85 and 68,753.58 is: 103,121.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,438.86 : 236,138.85 = 68,753.58 : x
  2. Step 2: Convert to fraction form
    157,438.86/236,138.85 = 68,753.58/x
  3. Step 3: Cross multiply
    157,438.86x = 236,138.85 × 68,753.58
  4. Step 4: Simplify right side
    157,438.86x = 16,235,391,314.58
  5. Step 5: Solve for x
    x = 16,235,391,314.58/157,438.86
  6. Step 6: Final answer
    x = 103,121.88

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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.