Home / 100,267.13-138,316.86-67,990.82

Finding the Fourth Proportional to 100,267.13, 138,316.86 and 67,990.82

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Solution

The fourth proportional to 100,267.13, 138,316.86 and 67,990.82 is: 93,792.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,267.13 : 138,316.86 = 67,990.82 : x
  2. Step 2: Convert to fraction form
    100,267.13/138,316.86 = 67,990.82/x
  3. Step 3: Cross multiply
    100,267.13x = 138,316.86 × 67,990.82
  4. Step 4: Simplify right side
    100,267.13x = 9,404,276,039.64
  5. Step 5: Solve for x
    x = 9,404,276,039.64/100,267.13
  6. Step 6: Final answer
    x = 93,792.22

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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.