Home / 149,890.45-206,615.79-102,061.57

Finding the Fourth Proportional to 149,890.45, 206,615.79 and 102,061.57

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Solution

The fourth proportional to 149,890.45, 206,615.79 and 102,061.57 is: 140,686.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,890.45 : 206,615.79 = 102,061.57 : x
  2. Step 2: Convert to fraction form
    149,890.45/206,615.79 = 102,061.57/x
  3. Step 3: Cross multiply
    149,890.45x = 206,615.79 × 102,061.57
  4. Step 4: Simplify right side
    149,890.45x = 21,087,530,881.11
  5. Step 5: Solve for x
    x = 21,087,530,881.11/149,890.45
  6. Step 6: Final answer
    x = 140,686.29

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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.