Home / 138,339.48-190,917.77-77,095.18

Finding the Fourth Proportional to 138,339.48, 190,917.77 and 77,095.18

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Solution

The fourth proportional to 138,339.48, 190,917.77 and 77,095.18 is: 106,396.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,339.48 : 190,917.77 = 77,095.18 : x
  2. Step 2: Convert to fraction form
    138,339.48/190,917.77 = 77,095.18/x
  3. Step 3: Cross multiply
    138,339.48x = 190,917.77 × 77,095.18
  4. Step 4: Simplify right side
    138,339.48x = 14,718,839,843.35
  5. Step 5: Solve for x
    x = 14,718,839,843.35/138,339.48
  6. Step 6: Final answer
    x = 106,396.52

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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.