Home / 100,759.10-139,067.43-57,767.46

Finding the Fourth Proportional to 100,759.10, 139,067.43 and 57,767.46

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Solution

The fourth proportional to 100,759.10, 139,067.43 and 57,767.46 is: 79,730.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,759.10 : 139,067.43 = 57,767.46 : x
  2. Step 2: Convert to fraction form
    100,759.10/139,067.43 = 57,767.46/x
  3. Step 3: Cross multiply
    100,759.10x = 139,067.43 × 57,767.46
  4. Step 4: Simplify right side
    100,759.10x = 8,033,572,199.83
  5. Step 5: Solve for x
    x = 8,033,572,199.83/100,759.10
  6. Step 6: Final answer
    x = 79,730.49

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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.