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Finding the Fourth Proportional to 143,774.30, 215,499.45 and 68,930.30

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Solution

The fourth proportional to 143,774.30, 215,499.45 and 68,930.30 is: 103,317.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,774.30 : 215,499.45 = 68,930.30 : x
  2. Step 2: Convert to fraction form
    143,774.30/215,499.45 = 68,930.30/x
  3. Step 3: Cross multiply
    143,774.30x = 215,499.45 × 68,930.30
  4. Step 4: Simplify right side
    143,774.30x = 14,854,441,738.34
  5. Step 5: Solve for x
    x = 14,854,441,738.34/143,774.30
  6. Step 6: Final answer
    x = 103,317.78

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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.