Home / 128,972.74-193,230.30-53,927.50

Finding the Fourth Proportional to 128,972.74, 193,230.30 and 53,927.50

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Solution

The fourth proportional to 128,972.74, 193,230.30 and 53,927.50 is: 80,795.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,972.74 : 193,230.30 = 53,927.50 : x
  2. Step 2: Convert to fraction form
    128,972.74/193,230.30 = 53,927.50/x
  3. Step 3: Cross multiply
    128,972.74x = 193,230.30 × 53,927.50
  4. Step 4: Simplify right side
    128,972.74x = 10,420,427,003.25
  5. Step 5: Solve for x
    x = 10,420,427,003.25/128,972.74
  6. Step 6: Final answer
    x = 80,795.58

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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.