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Finding the Fourth Proportional to 158,817.67, 219,105.87 and 90,798.10

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Solution

The fourth proportional to 158,817.67, 219,105.87 and 90,798.10 is: 125,265.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,817.67 : 219,105.87 = 90,798.10 : x
  2. Step 2: Convert to fraction form
    158,817.67/219,105.87 = 90,798.10/x
  3. Step 3: Cross multiply
    158,817.67x = 219,105.87 × 90,798.10
  4. Step 4: Simplify right side
    158,817.67x = 19,894,396,694.85
  5. Step 5: Solve for x
    x = 19,894,396,694.85/158,817.67
  6. Step 6: Final answer
    x = 125,265.64

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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.