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Finding the Fourth Proportional to 128,573.86, 192,860.76 and 58,473.22

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Solution

The fourth proportional to 128,573.86, 192,860.76 and 58,473.22 is: 87,709.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,573.86 : 192,860.76 = 58,473.22 : x
  2. Step 2: Convert to fraction form
    128,573.86/192,860.76 = 58,473.22/x
  3. Step 3: Cross multiply
    128,573.86x = 192,860.76 × 58,473.22
  4. Step 4: Simplify right side
    128,573.86x = 11,277,189,648.85
  5. Step 5: Solve for x
    x = 11,277,189,648.85/128,573.86
  6. Step 6: Final answer
    x = 87,709.82

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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.