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Finding the Fourth Proportional to 149,670, 224,260.80 and 69,621

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Solution

The fourth proportional to 149,670, 224,260.80 and 69,621 is: 104,317.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,670 : 224,260.80 = 69,621 : x
  2. Step 2: Convert to fraction form
    149,670/224,260.80 = 69,621/x
  3. Step 3: Cross multiply
    149,670x = 224,260.80 × 69,621
  4. Step 4: Simplify right side
    149,670x = 15,613,261,156.80
  5. Step 5: Solve for x
    x = 15,613,261,156.80/149,670
  6. Step 6: Final answer
    x = 104,317.91

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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.