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Finding the Fourth Proportional to 169,813.80, 254,720.70 and 109,938.60

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Solution

The fourth proportional to 169,813.80, 254,720.70 and 109,938.60 is: 164,907.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,813.80 : 254,720.70 = 109,938.60 : x
  2. Step 2: Convert to fraction form
    169,813.80/254,720.70 = 109,938.60/x
  3. Step 3: Cross multiply
    169,813.80x = 254,720.70 × 109,938.60
  4. Step 4: Simplify right side
    169,813.80x = 28,003,637,149.02
  5. Step 5: Solve for x
    x = 28,003,637,149.02/169,813.80
  6. Step 6: Final answer
    x = 164,907.90

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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.