Home / 78,170.36-117,255.53-19,005.62

Finding the Fourth Proportional to 78,170.36, 117,255.53 and 19,005.62

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Solution

The fourth proportional to 78,170.36, 117,255.53 and 19,005.62 is: 28,508.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,170.36 : 117,255.53 = 19,005.62 : x
  2. Step 2: Convert to fraction form
    78,170.36/117,255.53 = 19,005.62/x
  3. Step 3: Cross multiply
    78,170.36x = 117,255.53 × 19,005.62
  4. Step 4: Simplify right side
    78,170.36x = 2,228,513,364.77
  5. Step 5: Solve for x
    x = 2,228,513,364.77/78,170.36
  6. Step 6: Final answer
    x = 28,508.42

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1.5x scale

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.