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Finding the Fourth Proportional to 90,000.95, 134,924.87 and 54,965.21

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Solution

The fourth proportional to 90,000.95, 134,924.87 and 54,965.21 is: 82,401.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,000.95 : 134,924.87 = 54,965.21 : x
  2. Step 2: Convert to fraction form
    90,000.95/134,924.87 = 54,965.21/x
  3. Step 3: Cross multiply
    90,000.95x = 134,924.87 × 54,965.21
  4. Step 4: Simplify right side
    90,000.95x = 7,416,173,276.56
  5. Step 5: Solve for x
    x = 7,416,173,276.56/90,000.95
  6. Step 6: Final answer
    x = 82,401.06

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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.