Home / 128,008.46-192,005.50-39,261.72

Finding the Fourth Proportional to 128,008.46, 192,005.50 and 39,261.72

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Solution

The fourth proportional to 128,008.46, 192,005.50 and 39,261.72 is: 58,890.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,008.46 : 192,005.50 = 39,261.72 : x
  2. Step 2: Convert to fraction form
    128,008.46/192,005.50 = 39,261.72/x
  3. Step 3: Cross multiply
    128,008.46x = 192,005.50 × 39,261.72
  4. Step 4: Simplify right side
    128,008.46x = 7,538,466,179.46
  5. Step 5: Solve for x
    x = 7,538,466,179.46/128,008.46
  6. Step 6: Final answer
    x = 58,890.37

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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.