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Finding the Fourth Proportional to 104,789, 144,623.46 and 67,143.44

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Solution

The fourth proportional to 104,789, 144,623.46 and 67,143.44 is: 92,667.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,789 : 144,623.46 = 67,143.44 : x
  2. Step 2: Convert to fraction form
    104,789/144,623.46 = 67,143.44/x
  3. Step 3: Cross multiply
    104,789x = 144,623.46 × 67,143.44
  4. Step 4: Simplify right side
    104,789x = 9,710,516,609.10
  5. Step 5: Solve for x
    x = 9,710,516,609.10/104,789
  6. Step 6: Final answer
    x = 92,667.33

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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.