Home / 128,892.78-193,261.41-57,802.50

Finding the Fourth Proportional to 128,892.78, 193,261.41 and 57,802.50

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Solution

The fourth proportional to 128,892.78, 193,261.41 and 57,802.50 is: 86,668.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,892.78 : 193,261.41 = 57,802.50 : x
  2. Step 2: Convert to fraction form
    128,892.78/193,261.41 = 57,802.50/x
  3. Step 3: Cross multiply
    128,892.78x = 193,261.41 × 57,802.50
  4. Step 4: Simplify right side
    128,892.78x = 11,170,992,651.53
  5. Step 5: Solve for x
    x = 11,170,992,651.53/128,892.78
  6. Step 6: Final answer
    x = 86,668.88

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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.