Home / 138,133.14-190,963.39-136,870.15

Finding the Fourth Proportional to 138,133.14, 190,963.39 and 136,870.15

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Solution

The fourth proportional to 138,133.14, 190,963.39 and 136,870.15 is: 189,217.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,133.14 : 190,963.39 = 136,870.15 : x
  2. Step 2: Convert to fraction form
    138,133.14/190,963.39 = 136,870.15/x
  3. Step 3: Cross multiply
    138,133.14x = 190,963.39 × 136,870.15
  4. Step 4: Simplify right side
    138,133.14x = 26,137,186,194.64
  5. Step 5: Solve for x
    x = 26,137,186,194.64/138,133.14
  6. Step 6: Final answer
    x = 189,217.35

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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.