Home / 79,136.19-109,203.80-43,319.34

Finding the Fourth Proportional to 79,136.19, 109,203.80 and 43,319.34

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Solution

The fourth proportional to 79,136.19, 109,203.80 and 43,319.34 is: 59,778.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,136.19 : 109,203.80 = 43,319.34 : x
  2. Step 2: Convert to fraction form
    79,136.19/109,203.80 = 43,319.34/x
  3. Step 3: Cross multiply
    79,136.19x = 109,203.80 × 43,319.34
  4. Step 4: Simplify right side
    79,136.19x = 4,730,636,324.90
  5. Step 5: Solve for x
    x = 4,730,636,324.90/79,136.19
  6. Step 6: Final answer
    x = 59,778.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.