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Finding the Fourth Proportional to 109,099.80, 163,592.10 and 38,981.40

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Solution

The fourth proportional to 109,099.80, 163,592.10 and 38,981.40 is: 58,451.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,099.80 : 163,592.10 = 38,981.40 : x
  2. Step 2: Convert to fraction form
    109,099.80/163,592.10 = 38,981.40/x
  3. Step 3: Cross multiply
    109,099.80x = 163,592.10 × 38,981.40
  4. Step 4: Simplify right side
    109,099.80x = 6,377,049,086.94
  5. Step 5: Solve for x
    x = 6,377,049,086.94/109,099.80
  6. Step 6: Final answer
    x = 58,451.52

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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.