Home / 100,575.25-138,816.72-66,585.02

Finding the Fourth Proportional to 100,575.25, 138,816.72 and 66,585.02

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Solution

The fourth proportional to 100,575.25, 138,816.72 and 66,585.02 is: 91,902.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,575.25 : 138,816.72 = 66,585.02 : x
  2. Step 2: Convert to fraction form
    100,575.25/138,816.72 = 66,585.02/x
  3. Step 3: Cross multiply
    100,575.25x = 138,816.72 × 66,585.02
  4. Step 4: Simplify right side
    100,575.25x = 9,243,113,383.45
  5. Step 5: Solve for x
    x = 9,243,113,383.45/100,575.25
  6. Step 6: Final answer
    x = 91,902.47

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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.