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Finding the Fourth Proportional to 100,359.89, 150,565.14 and 70,835.39

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Solution

The fourth proportional to 100,359.89, 150,565.14 and 70,835.39 is: 106,270.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,359.89 : 150,565.14 = 70,835.39 : x
  2. Step 2: Convert to fraction form
    100,359.89/150,565.14 = 70,835.39/x
  3. Step 3: Cross multiply
    100,359.89x = 150,565.14 × 70,835.39
  4. Step 4: Simplify right side
    100,359.89x = 10,665,339,659.48
  5. Step 5: Solve for x
    x = 10,665,339,659.48/100,359.89
  6. Step 6: Final answer
    x = 106,270.94

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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.