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Finding the Fourth Proportional to 101,480.99, 139,951.23 and 87,136.32

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Solution

The fourth proportional to 101,480.99, 139,951.23 and 87,136.32 is: 120,168.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,480.99 : 139,951.23 = 87,136.32 : x
  2. Step 2: Convert to fraction form
    101,480.99/139,951.23 = 87,136.32/x
  3. Step 3: Cross multiply
    101,480.99x = 139,951.23 × 87,136.32
  4. Step 4: Simplify right side
    101,480.99x = 12,194,835,136.92
  5. Step 5: Solve for x
    x = 12,194,835,136.92/101,480.99
  6. Step 6: Final answer
    x = 120,168.67

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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.