Home / 138,864.80-208,297.20-130,116.80

Finding the Fourth Proportional to 138,864.80, 208,297.20 and 130,116.80

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Solution

The fourth proportional to 138,864.80, 208,297.20 and 130,116.80 is: 195,175.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,864.80 : 208,297.20 = 130,116.80 : x
  2. Step 2: Convert to fraction form
    138,864.80/208,297.20 = 130,116.80/x
  3. Step 3: Cross multiply
    138,864.80x = 208,297.20 × 130,116.80
  4. Step 4: Simplify right side
    138,864.80x = 27,102,965,112.96
  5. Step 5: Solve for x
    x = 27,102,965,112.96/138,864.80
  6. Step 6: Final answer
    x = 195,175.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.