Home / 157,738.12-236,410.26-78,874.88

Finding the Fourth Proportional to 157,738.12, 236,410.26 and 78,874.88

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Solution

The fourth proportional to 157,738.12, 236,410.26 and 78,874.88 is: 118,213.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,738.12 : 236,410.26 = 78,874.88 : x
  2. Step 2: Convert to fraction form
    157,738.12/236,410.26 = 78,874.88/x
  3. Step 3: Cross multiply
    157,738.12x = 236,410.26 × 78,874.88
  4. Step 4: Simplify right side
    157,738.12x = 18,646,830,888.27
  5. Step 5: Solve for x
    x = 18,646,830,888.27/157,738.12
  6. Step 6: Final answer
    x = 118,213.85

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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.