Home / 318,007.16-477,003.26-78,120.69

Finding the Fourth Proportional to 318,007.16, 477,003.26 and 78,120.69

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Solution

The fourth proportional to 318,007.16, 477,003.26 and 78,120.69 is: 117,179.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,007.16 : 477,003.26 = 78,120.69 : x
  2. Step 2: Convert to fraction form
    318,007.16/477,003.26 = 78,120.69/x
  3. Step 3: Cross multiply
    318,007.16x = 477,003.26 × 78,120.69
  4. Step 4: Simplify right side
    318,007.16x = 37,263,822,109.18
  5. Step 5: Solve for x
    x = 37,263,822,109.18/318,007.16
  6. Step 6: Final answer
    x = 117,179.19

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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.