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Finding the Fourth Proportional to 138,453.42, 207,728.37 and 43,698.24

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Solution

The fourth proportional to 138,453.42, 207,728.37 and 43,698.24 is: 65,562.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,453.42 : 207,728.37 = 43,698.24 : x
  2. Step 2: Convert to fraction form
    138,453.42/207,728.37 = 43,698.24/x
  3. Step 3: Cross multiply
    138,453.42x = 207,728.37 × 43,698.24
  4. Step 4: Simplify right side
    138,453.42x = 9,077,364,167.07
  5. Step 5: Solve for x
    x = 9,077,364,167.07/138,453.42
  6. Step 6: Final answer
    x = 65,562.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.