Home / 128,002.31-191,996.27-39,255.57

Finding the Fourth Proportional to 128,002.31, 191,996.27 and 39,255.57

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Solution

The fourth proportional to 128,002.31, 191,996.27 and 39,255.57 is: 58,881.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,002.31 : 191,996.27 = 39,255.57 : x
  2. Step 2: Convert to fraction form
    128,002.31/191,996.27 = 39,255.57/x
  3. Step 3: Cross multiply
    128,002.31x = 191,996.27 × 39,255.57
  4. Step 4: Simplify right side
    128,002.31x = 7,536,923,188.47
  5. Step 5: Solve for x
    x = 7,536,923,188.47/128,002.31
  6. Step 6: Final answer
    x = 58,881.15

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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.