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Finding the Fourth Proportional to 168,818.94, 252,871.11 and 109,478.34

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Solution

The fourth proportional to 168,818.94, 252,871.11 and 109,478.34 is: 163,985.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,818.94 : 252,871.11 = 109,478.34 : x
  2. Step 2: Convert to fraction form
    168,818.94/252,871.11 = 109,478.34/x
  3. Step 3: Cross multiply
    168,818.94x = 252,871.11 × 109,478.34
  4. Step 4: Simplify right side
    168,818.94x = 27,683,909,356.76
  5. Step 5: Solve for x
    x = 27,683,909,356.76/168,818.94
  6. Step 6: Final answer
    x = 163,985.80

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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.