Home / 127,868.05-191,857.40-68,634.55

Finding the Fourth Proportional to 127,868.05, 191,857.40 and 68,634.55

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Solution

The fourth proportional to 127,868.05, 191,857.40 and 68,634.55 is: 102,981.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,868.05 : 191,857.40 = 68,634.55 : x
  2. Step 2: Convert to fraction form
    127,868.05/191,857.40 = 68,634.55/x
  3. Step 3: Cross multiply
    127,868.05x = 191,857.40 × 68,634.55
  4. Step 4: Simplify right side
    127,868.05x = 13,168,045,010.71
  5. Step 5: Solve for x
    x = 13,168,045,010.71/127,868.05
  6. Step 6: Final answer
    x = 102,981.52

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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.