Home / 138,093.83-190,567.67-77,664.45

Finding the Fourth Proportional to 138,093.83, 190,567.67 and 77,664.45

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Solution

The fourth proportional to 138,093.83, 190,567.67 and 77,664.45 is: 107,175.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,093.83 : 190,567.67 = 77,664.45 : x
  2. Step 2: Convert to fraction form
    138,093.83/190,567.67 = 77,664.45/x
  3. Step 3: Cross multiply
    138,093.83x = 190,567.67 × 77,664.45
  4. Step 4: Simplify right side
    138,093.83x = 14,800,333,278.33
  5. Step 5: Solve for x
    x = 14,800,333,278.33/138,093.83
  6. Step 6: Final answer
    x = 107,175.92

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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.