Home / 138,217.96-190,738.64-76,963.72

Finding the Fourth Proportional to 138,217.96, 190,738.64 and 76,963.72

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Solution

The fourth proportional to 138,217.96, 190,738.64 and 76,963.72 is: 106,208.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,217.96 : 190,738.64 = 76,963.72 : x
  2. Step 2: Convert to fraction form
    138,217.96/190,738.64 = 76,963.72/x
  3. Step 3: Cross multiply
    138,217.96x = 190,738.64 × 76,963.72
  4. Step 4: Simplify right side
    138,217.96x = 14,679,955,282.14
  5. Step 5: Solve for x
    x = 14,679,955,282.14/138,217.96
  6. Step 6: Final answer
    x = 106,208.74

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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.