Home / 191,856.20-287,867.10-103,005.86

Finding the Fourth Proportional to 191,856.20, 287,867.10 and 103,005.86

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Solution

The fourth proportional to 191,856.20, 287,867.10 and 103,005.86 is: 154,553.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,856.20 : 287,867.10 = 103,005.86 : x
  2. Step 2: Convert to fraction form
    191,856.20/287,867.10 = 103,005.86/x
  3. Step 3: Cross multiply
    191,856.20x = 287,867.10 × 103,005.86
  4. Step 4: Simplify right side
    191,856.20x = 29,651,998,201.21
  5. Step 5: Solve for x
    x = 29,651,998,201.21/191,856.20
  6. Step 6: Final answer
    x = 154,553.24

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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.