Home / 128,343.20-192,511.20-58,222.40

Finding the Fourth Proportional to 128,343.20, 192,511.20 and 58,222.40

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Solution

The fourth proportional to 128,343.20, 192,511.20 and 58,222.40 is: 87,331.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,343.20 : 192,511.20 = 58,222.40 : x
  2. Step 2: Convert to fraction form
    128,343.20/192,511.20 = 58,222.40/x
  3. Step 3: Cross multiply
    128,343.20x = 192,511.20 × 58,222.40
  4. Step 4: Simplify right side
    128,343.20x = 11,208,464,090.88
  5. Step 5: Solve for x
    x = 11,208,464,090.88/128,343.20
  6. Step 6: Final answer
    x = 87,331.97

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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.