Home / 191,939.70-287,542.35-103,163.70

Finding the Fourth Proportional to 191,939.70, 287,542.35 and 103,163.70

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Solution

The fourth proportional to 191,939.70, 287,542.35 and 103,163.70 is: 154,548.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,939.70 : 287,542.35 = 103,163.70 : x
  2. Step 2: Convert to fraction form
    191,939.70/287,542.35 = 103,163.70/x
  3. Step 3: Cross multiply
    191,939.70x = 287,542.35 × 103,163.70
  4. Step 4: Simplify right side
    191,939.70x = 29,663,932,732.70
  5. Step 5: Solve for x
    x = 29,663,932,732.70/191,939.70
  6. Step 6: Final answer
    x = 154,548.19

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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.