Home / 148,917.90-205,507.16-85,256.17

Finding the Fourth Proportional to 148,917.90, 205,507.16 and 85,256.17

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Solution

The fourth proportional to 148,917.90, 205,507.16 and 85,256.17 is: 117,653.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,917.90 : 205,507.16 = 85,256.17 : x
  2. Step 2: Convert to fraction form
    148,917.90/205,507.16 = 85,256.17/x
  3. Step 3: Cross multiply
    148,917.90x = 205,507.16 × 85,256.17
  4. Step 4: Simplify right side
    148,917.90x = 17,520,753,369.18
  5. Step 5: Solve for x
    x = 17,520,753,369.18/148,917.90
  6. Step 6: Final answer
    x = 117,653.78

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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.