Home / 128,163.30-192,263.37-39,424.29

Finding the Fourth Proportional to 128,163.30, 192,263.37 and 39,424.29

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Solution

The fourth proportional to 128,163.30, 192,263.37 and 39,424.29 is: 59,142.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,163.30 : 192,263.37 = 39,424.29 : x
  2. Step 2: Convert to fraction form
    128,163.30/192,263.37 = 39,424.29/x
  3. Step 3: Cross multiply
    128,163.30x = 192,263.37 × 39,424.29
  4. Step 4: Simplify right side
    128,163.30x = 7,579,846,855.26
  5. Step 5: Solve for x
    x = 7,579,846,855.26/128,163.30
  6. Step 6: Final answer
    x = 59,142.10

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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.