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Finding the Fourth Proportional to 146,431.50, 219,396.50 and 79,918.30

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Solution

The fourth proportional to 146,431.50, 219,396.50 and 79,918.30 is: 119,740.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,431.50 : 219,396.50 = 79,918.30 : x
  2. Step 2: Convert to fraction form
    146,431.50/219,396.50 = 79,918.30/x
  3. Step 3: Cross multiply
    146,431.50x = 219,396.50 × 79,918.30
  4. Step 4: Simplify right side
    146,431.50x = 17,533,794,246.19
  5. Step 5: Solve for x
    x = 17,533,794,246.19/146,431.50
  6. Step 6: Final answer
    x = 119,740.59

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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.