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Finding the Fourth Proportional to 149,495.64, 223,989.70 and 90,206.73

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Solution

The fourth proportional to 149,495.64, 223,989.70 and 90,206.73 is: 135,156.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,495.64 : 223,989.70 = 90,206.73 : x
  2. Step 2: Convert to fraction form
    149,495.64/223,989.70 = 90,206.73/x
  3. Step 3: Cross multiply
    149,495.64x = 223,989.70 × 90,206.73
  4. Step 4: Simplify right side
    149,495.64x = 20,205,377,045.22
  5. Step 5: Solve for x
    x = 20,205,377,045.22/149,495.64
  6. Step 6: Final answer
    x = 135,156.97

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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.