Home / 128,860.73-193,213.42-57,770.50

Finding the Fourth Proportional to 128,860.73, 193,213.42 and 57,770.50

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Solution

The fourth proportional to 128,860.73, 193,213.42 and 57,770.50 is: 86,620.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,860.73 : 193,213.42 = 57,770.50 : x
  2. Step 2: Convert to fraction form
    128,860.73/193,213.42 = 57,770.50/x
  3. Step 3: Cross multiply
    128,860.73x = 193,213.42 × 57,770.50
  4. Step 4: Simplify right side
    128,860.73x = 11,162,035,880.11
  5. Step 5: Solve for x
    x = 11,162,035,880.11/128,860.73
  6. Step 6: Final answer
    x = 86,620.93

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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.