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Finding the Fourth Proportional to 192,123.94, 288,179.76 and 86,942.91

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Solution

The fourth proportional to 192,123.94, 288,179.76 and 86,942.91 is: 130,411.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,123.94 : 288,179.76 = 86,942.91 : x
  2. Step 2: Convert to fraction form
    192,123.94/288,179.76 = 86,942.91/x
  3. Step 3: Cross multiply
    192,123.94x = 288,179.76 × 86,942.91
  4. Step 4: Simplify right side
    192,123.94x = 25,055,186,937.50
  5. Step 5: Solve for x
    x = 25,055,186,937.50/192,123.94
  6. Step 6: Final answer
    x = 130,411.58

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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.