Home / 136,099.76-187,828.19-81,653.98

Finding the Fourth Proportional to 136,099.76, 187,828.19 and 81,653.98

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Solution

The fourth proportional to 136,099.76, 187,828.19 and 81,653.98 is: 112,688.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,099.76 : 187,828.19 = 81,653.98 : x
  2. Step 2: Convert to fraction form
    136,099.76/187,828.19 = 81,653.98/x
  3. Step 3: Cross multiply
    136,099.76x = 187,828.19 × 81,653.98
  4. Step 4: Simplify right side
    136,099.76x = 15,336,917,922.29
  5. Step 5: Solve for x
    x = 15,336,917,922.29/136,099.76
  6. Step 6: Final answer
    x = 112,688.80

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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.