Home / 136,615.90-188,529.57-76,186.61

Finding the Fourth Proportional to 136,615.90, 188,529.57 and 76,186.61

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Solution

The fourth proportional to 136,615.90, 188,529.57 and 76,186.61 is: 105,137.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,615.90 : 188,529.57 = 76,186.61 : x
  2. Step 2: Convert to fraction form
    136,615.90/188,529.57 = 76,186.61/x
  3. Step 3: Cross multiply
    136,615.90x = 188,529.57 × 76,186.61
  4. Step 4: Simplify right side
    136,615.90x = 14,363,429,013.52
  5. Step 5: Solve for x
    x = 14,363,429,013.52/136,615.90
  6. Step 6: Final answer
    x = 105,137.32

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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.