Home / 138,182.22-190,706.94-77,767.56

Finding the Fourth Proportional to 138,182.22, 190,706.94 and 77,767.56

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Solution

The fourth proportional to 138,182.22, 190,706.94 and 77,767.56 is: 107,327.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,182.22 : 190,706.94 = 77,767.56 : x
  2. Step 2: Convert to fraction form
    138,182.22/190,706.94 = 77,767.56/x
  3. Step 3: Cross multiply
    138,182.22x = 190,706.94 × 77,767.56
  4. Step 4: Simplify right side
    138,182.22x = 14,830,813,398.87
  5. Step 5: Solve for x
    x = 14,830,813,398.87/138,182.22
  6. Step 6: Final answer
    x = 107,327.94

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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.