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Finding the Fourth Proportional to 191,545.92, 287,249.76 and 80,746.56

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Solution

The fourth proportional to 191,545.92, 287,249.76 and 80,746.56 is: 121,090.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,545.92 : 287,249.76 = 80,746.56 : x
  2. Step 2: Convert to fraction form
    191,545.92/287,249.76 = 80,746.56/x
  3. Step 3: Cross multiply
    191,545.92x = 287,249.76 × 80,746.56
  4. Step 4: Simplify right side
    191,545.92x = 23,194,429,980.83
  5. Step 5: Solve for x
    x = 23,194,429,980.83/191,545.92
  6. Step 6: Final answer
    x = 121,090.70

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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.