Home / 138,087.92-190,568.22-77,677.58

Finding the Fourth Proportional to 138,087.92, 190,568.22 and 77,677.58

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Solution

The fourth proportional to 138,087.92, 190,568.22 and 77,677.58 is: 107,198.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,087.92 : 190,568.22 = 77,677.58 : x
  2. Step 2: Convert to fraction form
    138,087.92/190,568.22 = 77,677.58/x
  3. Step 3: Cross multiply
    138,087.92x = 190,568.22 × 77,677.58
  4. Step 4: Simplify right side
    138,087.92x = 14,802,878,154.51
  5. Step 5: Solve for x
    x = 14,802,878,154.51/138,087.92
  6. Step 6: Final answer
    x = 107,198.94

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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.