Home / 100,364.02-138,388.17-82,156.84

Finding the Fourth Proportional to 100,364.02, 138,388.17 and 82,156.84

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Solution

The fourth proportional to 100,364.02, 138,388.17 and 82,156.84 is: 113,282.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,364.02 : 138,388.17 = 82,156.84 : x
  2. Step 2: Convert to fraction form
    100,364.02/138,388.17 = 82,156.84/x
  3. Step 3: Cross multiply
    100,364.02x = 138,388.17 × 82,156.84
  4. Step 4: Simplify right side
    100,364.02x = 11,369,534,740.58
  5. Step 5: Solve for x
    x = 11,369,534,740.58/100,364.02
  6. Step 6: Final answer
    x = 113,282.97

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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.