Home / 100,115.41-138,145.62-59,820.66

Finding the Fourth Proportional to 100,115.41, 138,145.62 and 59,820.66

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Solution

The fourth proportional to 100,115.41, 138,145.62 and 59,820.66 is: 82,544.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,115.41 : 138,145.62 = 59,820.66 : x
  2. Step 2: Convert to fraction form
    100,115.41/138,145.62 = 59,820.66/x
  3. Step 3: Cross multiply
    100,115.41x = 138,145.62 × 59,820.66
  4. Step 4: Simplify right side
    100,115.41x = 8,263,962,164.51
  5. Step 5: Solve for x
    x = 8,263,962,164.51/100,115.41
  6. Step 6: Final answer
    x = 82,544.36

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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.