Home / 78,107.33-117,136.76-28,180.94

Finding the Fourth Proportional to 78,107.33, 117,136.76 and 28,180.94

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Solution

The fourth proportional to 78,107.33, 117,136.76 and 28,180.94 is: 42,262.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,107.33 : 117,136.76 = 28,180.94 : x
  2. Step 2: Convert to fraction form
    78,107.33/117,136.76 = 28,180.94/x
  3. Step 3: Cross multiply
    78,107.33x = 117,136.76 × 28,180.94
  4. Step 4: Simplify right side
    78,107.33x = 3,301,024,005.35
  5. Step 5: Solve for x
    x = 3,301,024,005.35/78,107.33
  6. Step 6: Final answer
    x = 42,262.67

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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.