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Finding the Fourth Proportional to 128,111.56, 192,166.62 and 43,872.46

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Solution

The fourth proportional to 128,111.56, 192,166.62 and 43,872.46 is: 65,808.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,111.56 : 192,166.62 = 43,872.46 : x
  2. Step 2: Convert to fraction form
    128,111.56/192,166.62 = 43,872.46/x
  3. Step 3: Cross multiply
    128,111.56x = 192,166.62 × 43,872.46
  4. Step 4: Simplify right side
    128,111.56x = 8,430,822,349.29
  5. Step 5: Solve for x
    x = 8,430,822,349.29/128,111.56
  6. Step 6: Final answer
    x = 65,808.44

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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.