Home / 100,956.72-139,326.36-55,634.58

Finding the Fourth Proportional to 100,956.72, 139,326.36 and 55,634.58

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Solution

The fourth proportional to 100,956.72, 139,326.36 and 55,634.58 is: 76,779.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,956.72 : 139,326.36 = 55,634.58 : x
  2. Step 2: Convert to fraction form
    100,956.72/139,326.36 = 55,634.58/x
  3. Step 3: Cross multiply
    100,956.72x = 139,326.36 × 55,634.58
  4. Step 4: Simplify right side
    100,956.72x = 7,751,363,521.53
  5. Step 5: Solve for x
    x = 7,751,363,521.53/100,956.72
  6. Step 6: Final answer
    x = 76,779.07

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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.