Home / 157,678.62-236,351.82-78,626.77

Finding the Fourth Proportional to 157,678.62, 236,351.82 and 78,626.77

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Solution

The fourth proportional to 157,678.62, 236,351.82 and 78,626.77 is: 117,857.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,678.62 : 236,351.82 = 78,626.77 : x
  2. Step 2: Convert to fraction form
    157,678.62/236,351.82 = 78,626.77/x
  3. Step 3: Cross multiply
    157,678.62x = 236,351.82 × 78,626.77
  4. Step 4: Simplify right side
    157,678.62x = 18,583,580,392.75
  5. Step 5: Solve for x
    x = 18,583,580,392.75/157,678.62
  6. Step 6: Final answer
    x = 117,857.33

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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.