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Finding the Fourth Proportional to 191,769.48, 287,695.74 and 73,440.81

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Solution

The fourth proportional to 191,769.48, 287,695.74 and 73,440.81 is: 110,177.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,769.48 : 287,695.74 = 73,440.81 : x
  2. Step 2: Convert to fraction form
    191,769.48/287,695.74 = 73,440.81/x
  3. Step 3: Cross multiply
    191,769.48x = 287,695.74 × 73,440.81
  4. Step 4: Simplify right side
    191,769.48x = 21,128,608,179.15
  5. Step 5: Solve for x
    x = 21,128,608,179.15/191,769.48
  6. Step 6: Final answer
    x = 110,177.12

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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.