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Finding the Fourth Proportional to 191,982.54, 287,850.79 and 79,740.24

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Solution

The fourth proportional to 191,982.54, 287,850.79 and 79,740.24 is: 119,559.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,982.54 : 287,850.79 = 79,740.24 : x
  2. Step 2: Convert to fraction form
    191,982.54/287,850.79 = 79,740.24/x
  3. Step 3: Cross multiply
    191,982.54x = 287,850.79 × 79,740.24
  4. Step 4: Simplify right side
    191,982.54x = 22,953,291,078.79
  5. Step 5: Solve for x
    x = 22,953,291,078.79/191,982.54
  6. Step 6: Final answer
    x = 119,559.26

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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.