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Finding the Fourth Proportional to 150,326.64, 207,359.64 and 99,339.84

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Solution

The fourth proportional to 150,326.64, 207,359.64 and 99,339.84 is: 137,028.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,326.64 : 207,359.64 = 99,339.84 : x
  2. Step 2: Convert to fraction form
    150,326.64/207,359.64 = 99,339.84/x
  3. Step 3: Cross multiply
    150,326.64x = 207,359.64 × 99,339.84
  4. Step 4: Simplify right side
    150,326.64x = 20,599,073,460.06
  5. Step 5: Solve for x
    x = 20,599,073,460.06/150,326.64
  6. Step 6: Final answer
    x = 137,028.76

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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.