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Finding the Fourth Proportional to 179,143.95, 268,819.80 and 90,404.40

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Solution

The fourth proportional to 179,143.95, 268,819.80 and 90,404.40 is: 135,659.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,143.95 : 268,819.80 = 90,404.40 : x
  2. Step 2: Convert to fraction form
    179,143.95/268,819.80 = 90,404.40/x
  3. Step 3: Cross multiply
    179,143.95x = 268,819.80 × 90,404.40
  4. Step 4: Simplify right side
    179,143.95x = 24,302,492,727.12
  5. Step 5: Solve for x
    x = 24,302,492,727.12/179,143.95
  6. Step 6: Final answer
    x = 135,659.02

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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.