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Finding the Fourth Proportional to 169,969.90, 254,954.85 and 143,397.85

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Solution

The fourth proportional to 169,969.90, 254,954.85 and 143,397.85 is: 215,096.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,969.90 : 254,954.85 = 143,397.85 : x
  2. Step 2: Convert to fraction form
    169,969.90/254,954.85 = 143,397.85/x
  3. Step 3: Cross multiply
    169,969.90x = 254,954.85 × 143,397.85
  4. Step 4: Simplify right side
    169,969.90x = 36,559,977,337.07
  5. Step 5: Solve for x
    x = 36,559,977,337.07/169,969.90
  6. Step 6: Final answer
    x = 215,096.78

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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.