Home / 148,715.10-205,220.76-80,729.46

Finding the Fourth Proportional to 148,715.10, 205,220.76 and 80,729.46

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Solution

The fourth proportional to 148,715.10, 205,220.76 and 80,729.46 is: 111,403.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,715.10 : 205,220.76 = 80,729.46 : x
  2. Step 2: Convert to fraction form
    148,715.10/205,220.76 = 80,729.46/x
  3. Step 3: Cross multiply
    148,715.10x = 205,220.76 × 80,729.46
  4. Step 4: Simplify right side
    148,715.10x = 16,567,361,135.59
  5. Step 5: Solve for x
    x = 16,567,361,135.59/148,715.10
  6. Step 6: Final answer
    x = 111,403.36

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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.