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Finding the Fourth Proportional to 109,035.72, 150,737.64 and 108,037.80

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Solution

The fourth proportional to 109,035.72, 150,737.64 and 108,037.80 is: 149,358.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,035.72 : 150,737.64 = 108,037.80 : x
  2. Step 2: Convert to fraction form
    109,035.72/150,737.64 = 108,037.80/x
  3. Step 3: Cross multiply
    109,035.72x = 150,737.64 × 108,037.80
  4. Step 4: Simplify right side
    109,035.72x = 16,285,363,002.79
  5. Step 5: Solve for x
    x = 16,285,363,002.79/109,035.72
  6. Step 6: Final answer
    x = 149,358.05

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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.