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Finding the Fourth Proportional to 128,062, 192,108.32 and 39,303.89

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Solution

The fourth proportional to 128,062, 192,108.32 and 39,303.89 is: 58,960.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,062 : 192,108.32 = 39,303.89 : x
  2. Step 2: Convert to fraction form
    128,062/192,108.32 = 39,303.89/x
  3. Step 3: Cross multiply
    128,062x = 192,108.32 × 39,303.89
  4. Step 4: Simplify right side
    128,062x = 7,550,604,277.36
  5. Step 5: Solve for x
    x = 7,550,604,277.36/128,062
  6. Step 6: Final answer
    x = 58,960.54

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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.