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Finding the Fourth Proportional to 128,543.37, 192,854.43 and 57,525.77

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Solution

The fourth proportional to 128,543.37, 192,854.43 and 57,525.77 is: 86,306.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,543.37 : 192,854.43 = 57,525.77 : x
  2. Step 2: Convert to fraction form
    128,543.37/192,854.43 = 57,525.77/x
  3. Step 3: Cross multiply
    128,543.37x = 192,854.43 × 57,525.77
  4. Step 4: Simplify right side
    128,543.37x = 11,094,098,619.39
  5. Step 5: Solve for x
    x = 11,094,098,619.39/128,543.37
  6. Step 6: Final answer
    x = 86,306.27

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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.