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Finding the Fourth Proportional to 128,262.72, 192,394.08 and 34,768.47

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Solution

The fourth proportional to 128,262.72, 192,394.08 and 34,768.47 is: 52,152.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,262.72 : 192,394.08 = 34,768.47 : x
  2. Step 2: Convert to fraction form
    128,262.72/192,394.08 = 34,768.47/x
  3. Step 3: Cross multiply
    128,262.72x = 192,394.08 × 34,768.47
  4. Step 4: Simplify right side
    128,262.72x = 6,689,247,798.66
  5. Step 5: Solve for x
    x = 6,689,247,798.66/128,262.72
  6. Step 6: Final answer
    x = 52,152.71

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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.