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Finding the Fourth Proportional to 143,612.56, 215,098.04 and 104,078.88

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Solution

The fourth proportional to 143,612.56, 215,098.04 and 104,078.88 is: 155,885.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,612.56 : 215,098.04 = 104,078.88 : x
  2. Step 2: Convert to fraction form
    143,612.56/215,098.04 = 104,078.88/x
  3. Step 3: Cross multiply
    143,612.56x = 215,098.04 × 104,078.88
  4. Step 4: Simplify right side
    143,612.56x = 22,387,163,093.40
  5. Step 5: Solve for x
    x = 22,387,163,093.40/143,612.56
  6. Step 6: Final answer
    x = 155,885.83

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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.