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Finding the Fourth Proportional to 128,130.52, 192,230.88 and 61,626.28

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Solution

The fourth proportional to 128,130.52, 192,230.88 and 61,626.28 is: 92,456.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,130.52 : 192,230.88 = 61,626.28 : x
  2. Step 2: Convert to fraction form
    128,130.52/192,230.88 = 61,626.28/x
  3. Step 3: Cross multiply
    128,130.52x = 192,230.88 × 61,626.28
  4. Step 4: Simplify right side
    128,130.52x = 11,846,474,035.53
  5. Step 5: Solve for x
    x = 11,846,474,035.53/128,130.52
  6. Step 6: Final answer
    x = 92,456.30

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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.