Home / 128,933.13-193,408.74-53,977.62

Finding the Fourth Proportional to 128,933.13, 193,408.74 and 53,977.62

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Solution

The fourth proportional to 128,933.13, 193,408.74 and 53,977.62 is: 80,970.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,933.13 : 193,408.74 = 53,977.62 : x
  2. Step 2: Convert to fraction form
    128,933.13/193,408.74 = 53,977.62/x
  3. Step 3: Cross multiply
    128,933.13x = 193,408.74 × 53,977.62
  4. Step 4: Simplify right side
    128,933.13x = 10,439,743,472.40
  5. Step 5: Solve for x
    x = 10,439,743,472.40/128,933.13
  6. Step 6: Final answer
    x = 80,970.22

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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.