Home / 138,184.92-190,679.74-77,754.33

Finding the Fourth Proportional to 138,184.92, 190,679.74 and 77,754.33

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Solution

The fourth proportional to 138,184.92, 190,679.74 and 77,754.33 is: 107,292.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,184.92 : 190,679.74 = 77,754.33 : x
  2. Step 2: Convert to fraction form
    138,184.92/190,679.74 = 77,754.33/x
  3. Step 3: Cross multiply
    138,184.92x = 190,679.74 × 77,754.33
  4. Step 4: Simplify right side
    138,184.92x = 14,826,175,233.89
  5. Step 5: Solve for x
    x = 14,826,175,233.89/138,184.92
  6. Step 6: Final answer
    x = 107,292.28

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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.