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Finding the Fourth Proportional to 128,923.99, 193,425.57 and 61,542.01

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Solution

The fourth proportional to 128,923.99, 193,425.57 and 61,542.01 is: 92,331.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,923.99 : 193,425.57 = 61,542.01 : x
  2. Step 2: Convert to fraction form
    128,923.99/193,425.57 = 61,542.01/x
  3. Step 3: Cross multiply
    128,923.99x = 193,425.57 × 61,542.01
  4. Step 4: Simplify right side
    128,923.99x = 11,903,797,516.96
  5. Step 5: Solve for x
    x = 11,903,797,516.96/128,923.99
  6. Step 6: Final answer
    x = 92,331.91

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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.