Home / 128,342.15-192,498.50-33,581.49

Finding the Fourth Proportional to 128,342.15, 192,498.50 and 33,581.49

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Solution

The fourth proportional to 128,342.15, 192,498.50 and 33,581.49 is: 50,368.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,342.15 : 192,498.50 = 33,581.49 : x
  2. Step 2: Convert to fraction form
    128,342.15/192,498.50 = 33,581.49/x
  3. Step 3: Cross multiply
    128,342.15x = 192,498.50 × 33,581.49
  4. Step 4: Simplify right side
    128,342.15x = 6,464,385,720.40
  5. Step 5: Solve for x
    x = 6,464,385,720.40/128,342.15
  6. Step 6: Final answer
    x = 50,368.38

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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.