Home / 128,276.85-192,436.34-39,530.37

Finding the Fourth Proportional to 128,276.85, 192,436.34 and 39,530.37

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Solution

The fourth proportional to 128,276.85, 192,436.34 and 39,530.37 is: 59,302.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,276.85 : 192,436.34 = 39,530.37 : x
  2. Step 2: Convert to fraction form
    128,276.85/192,436.34 = 39,530.37/x
  3. Step 3: Cross multiply
    128,276.85x = 192,436.34 × 39,530.37
  4. Step 4: Simplify right side
    128,276.85x = 7,607,079,523.99
  5. Step 5: Solve for x
    x = 7,607,079,523.99/128,276.85
  6. Step 6: Final answer
    x = 59,302.04

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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.