Home / 100,886.58-139,221.45-63,181.62

Finding the Fourth Proportional to 100,886.58, 139,221.45 and 63,181.62

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Solution

The fourth proportional to 100,886.58, 139,221.45 and 63,181.62 is: 87,189.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,886.58 : 139,221.45 = 63,181.62 : x
  2. Step 2: Convert to fraction form
    100,886.58/139,221.45 = 63,181.62/x
  3. Step 3: Cross multiply
    100,886.58x = 139,221.45 × 63,181.62
  4. Step 4: Simplify right side
    100,886.58x = 8,796,236,749.75
  5. Step 5: Solve for x
    x = 8,796,236,749.75/100,886.58
  6. Step 6: Final answer
    x = 87,189.36

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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.