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Finding the Fourth Proportional to 128,333.62, 192,371.20 and 53,495.20

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Solution

The fourth proportional to 128,333.62, 192,371.20 and 53,495.20 is: 80,188.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,333.62 : 192,371.20 = 53,495.20 : x
  2. Step 2: Convert to fraction form
    128,333.62/192,371.20 = 53,495.20/x
  3. Step 3: Cross multiply
    128,333.62x = 192,371.20 × 53,495.20
  4. Step 4: Simplify right side
    128,333.62x = 10,290,935,818.24
  5. Step 5: Solve for x
    x = 10,290,935,818.24/128,333.62
  6. Step 6: Final answer
    x = 80,188.93

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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.