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Finding the Fourth Proportional to 100,065.37, 138,131.29 and 67,844.12

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Solution

The fourth proportional to 100,065.37, 138,131.29 and 67,844.12 is: 93,652.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,065.37 : 138,131.29 = 67,844.12 : x
  2. Step 2: Convert to fraction form
    100,065.37/138,131.29 = 67,844.12/x
  3. Step 3: Cross multiply
    100,065.37x = 138,131.29 × 67,844.12
  4. Step 4: Simplify right side
    100,065.37x = 9,371,395,814.51
  5. Step 5: Solve for x
    x = 9,371,395,814.51/100,065.37
  6. Step 6: Final answer
    x = 93,652.74

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1.5x scale

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.