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Finding the Fourth Proportional to 128,576.92, 192,533.10 and 88,718.80

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Solution

The fourth proportional to 128,576.92, 192,533.10 and 88,718.80 is: 132,848.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,576.92 : 192,533.10 = 88,718.80 : x
  2. Step 2: Convert to fraction form
    128,576.92/192,533.10 = 88,718.80/x
  3. Step 3: Cross multiply
    128,576.92x = 192,533.10 × 88,718.80
  4. Step 4: Simplify right side
    128,576.92x = 17,081,305,592.28
  5. Step 5: Solve for x
    x = 17,081,305,592.28/128,576.92
  6. Step 6: Final answer
    x = 132,848.92

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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.