Home / 148,890.63-205,469.07-81,822.63

Finding the Fourth Proportional to 148,890.63, 205,469.07 and 81,822.63

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Solution

The fourth proportional to 148,890.63, 205,469.07 and 81,822.63 is: 112,915.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,890.63 : 205,469.07 = 81,822.63 : x
  2. Step 2: Convert to fraction form
    148,890.63/205,469.07 = 81,822.63/x
  3. Step 3: Cross multiply
    148,890.63x = 205,469.07 × 81,822.63
  4. Step 4: Simplify right side
    148,890.63x = 16,812,019,691.05
  5. Step 5: Solve for x
    x = 16,812,019,691.05/148,890.63
  6. Step 6: Final answer
    x = 112,915.23

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1.5x scale

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.