Home / 128,953.85-193,436.92-54,076.43

Finding the Fourth Proportional to 128,953.85, 193,436.92 and 54,076.43

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Solution

The fourth proportional to 128,953.85, 193,436.92 and 54,076.43 is: 81,117.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,953.85 : 193,436.92 = 54,076.43 : x
  2. Step 2: Convert to fraction form
    128,953.85/193,436.92 = 54,076.43/x
  3. Step 3: Cross multiply
    128,953.85x = 193,436.92 × 54,076.43
  4. Step 4: Simplify right side
    128,953.85x = 10,460,378,412.20
  5. Step 5: Solve for x
    x = 10,460,378,412.20/128,953.85
  6. Step 6: Final answer
    x = 81,117.23

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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.