Home / 148,813.88-205,366.77-85,172.18

Finding the Fourth Proportional to 148,813.88, 205,366.77 and 85,172.18

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Solution

The fourth proportional to 148,813.88, 205,366.77 and 85,172.18 is: 117,539.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,813.88 : 205,366.77 = 85,172.18 : x
  2. Step 2: Convert to fraction form
    148,813.88/205,366.77 = 85,172.18/x
  3. Step 3: Cross multiply
    148,813.88x = 205,366.77 × 85,172.18
  4. Step 4: Simplify right side
    148,813.88x = 17,491,535,500.46
  5. Step 5: Solve for x
    x = 17,491,535,500.46/148,813.88
  6. Step 6: Final answer
    x = 117,539.68

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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.