Home / 138,288.06-190,838.88-77,846.94

Finding the Fourth Proportional to 138,288.06, 190,838.88 and 77,846.94

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Solution

The fourth proportional to 138,288.06, 190,838.88 and 77,846.94 is: 107,429.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,288.06 : 190,838.88 = 77,846.94 : x
  2. Step 2: Convert to fraction form
    138,288.06/190,838.88 = 77,846.94/x
  3. Step 3: Cross multiply
    138,288.06x = 190,838.88 × 77,846.94
  4. Step 4: Simplify right side
    138,288.06x = 14,856,222,841.03
  5. Step 5: Solve for x
    x = 14,856,222,841.03/138,288.06
  6. Step 6: Final answer
    x = 107,429.54

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1.5x scale

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.