Home / 128,983.50-193,475.22-84,600

Finding the Fourth Proportional to 128,983.50, 193,475.22 and 84,600

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Solution

The fourth proportional to 128,983.50, 193,475.22 and 84,600 is: 126,899.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,983.50 : 193,475.22 = 84,600 : x
  2. Step 2: Convert to fraction form
    128,983.50/193,475.22 = 84,600/x
  3. Step 3: Cross multiply
    128,983.50x = 193,475.22 × 84,600
  4. Step 4: Simplify right side
    128,983.50x = 16,368,003,612
  5. Step 5: Solve for x
    x = 16,368,003,612/128,983.50
  6. Step 6: Final answer
    x = 126,899.98

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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.