Home / 138,953.06-191,766.44-78,536.27

Finding the Fourth Proportional to 138,953.06, 191,766.44 and 78,536.27

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Solution

The fourth proportional to 138,953.06, 191,766.44 and 78,536.27 is: 108,386.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,953.06 : 191,766.44 = 78,536.27 : x
  2. Step 2: Convert to fraction form
    138,953.06/191,766.44 = 78,536.27/x
  3. Step 3: Cross multiply
    138,953.06x = 191,766.44 × 78,536.27
  4. Step 4: Simplify right side
    138,953.06x = 15,060,619,557.27
  5. Step 5: Solve for x
    x = 15,060,619,557.27/138,953.06
  6. Step 6: Final answer
    x = 108,386.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.