Home / 100,491.22-138,638.41-60,206.68

Finding the Fourth Proportional to 100,491.22, 138,638.41 and 60,206.68

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Solution

The fourth proportional to 100,491.22, 138,638.41 and 60,206.68 is: 83,061.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,491.22 : 138,638.41 = 60,206.68 : x
  2. Step 2: Convert to fraction form
    100,491.22/138,638.41 = 60,206.68/x
  3. Step 3: Cross multiply
    100,491.22x = 138,638.41 × 60,206.68
  4. Step 4: Simplify right side
    100,491.22x = 8,346,958,386.58
  5. Step 5: Solve for x
    x = 8,346,958,386.58/100,491.22
  6. Step 6: Final answer
    x = 83,061.57

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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.