Home / 128,675.20-193,014.24-53,806.72

Finding the Fourth Proportional to 128,675.20, 193,014.24 and 53,806.72

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Solution

The fourth proportional to 128,675.20, 193,014.24 and 53,806.72 is: 80,710.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,675.20 : 193,014.24 = 53,806.72 : x
  2. Step 2: Convert to fraction form
    128,675.20/193,014.24 = 53,806.72/x
  3. Step 3: Cross multiply
    128,675.20x = 193,014.24 × 53,806.72
  4. Step 4: Simplify right side
    128,675.20x = 10,385,463,167.69
  5. Step 5: Solve for x
    x = 10,385,463,167.69/128,675.20
  6. Step 6: Final answer
    x = 80,710.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.