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Finding the Fourth Proportional to 191,722.02, 264,717.23 and 123,778.68

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Solution

The fourth proportional to 191,722.02, 264,717.23 and 123,778.68 is: 170,905.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,722.02 : 264,717.23 = 123,778.68 : x
  2. Step 2: Convert to fraction form
    191,722.02/264,717.23 = 123,778.68/x
  3. Step 3: Cross multiply
    191,722.02x = 264,717.23 × 123,778.68
  4. Step 4: Simplify right side
    191,722.02x = 32,766,348,683.76
  5. Step 5: Solve for x
    x = 32,766,348,683.76/191,722.02
  6. Step 6: Final answer
    x = 170,905.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.