Home / 123,988.53-171,105.30-67,400.04

Finding the Fourth Proportional to 123,988.53, 171,105.30 and 67,400.04

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Solution

The fourth proportional to 123,988.53, 171,105.30 and 67,400.04 is: 93,012.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,988.53 : 171,105.30 = 67,400.04 : x
  2. Step 2: Convert to fraction form
    123,988.53/171,105.30 = 67,400.04/x
  3. Step 3: Cross multiply
    123,988.53x = 171,105.30 × 67,400.04
  4. Step 4: Simplify right side
    123,988.53x = 11,532,504,064.21
  5. Step 5: Solve for x
    x = 11,532,504,064.21/123,988.53
  6. Step 6: Final answer
    x = 93,012.67

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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.