Home / 128,007.46-192,004-39,260.72

Finding the Fourth Proportional to 128,007.46, 192,004 and 39,260.72

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Solution

The fourth proportional to 128,007.46, 192,004 and 39,260.72 is: 58,888.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,007.46 : 192,004 = 39,260.72 : x
  2. Step 2: Convert to fraction form
    128,007.46/192,004 = 39,260.72/x
  3. Step 3: Cross multiply
    128,007.46x = 192,004 × 39,260.72
  4. Step 4: Simplify right side
    128,007.46x = 7,538,215,282.88
  5. Step 5: Solve for x
    x = 7,538,215,282.88/128,007.46
  6. Step 6: Final answer
    x = 58,888.87

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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.