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Finding the Fourth Proportional to 105,324.60, 157,986.90 and 100,950.60

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Solution

The fourth proportional to 105,324.60, 157,986.90 and 100,950.60 is: 151,425.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,324.60 : 157,986.90 = 100,950.60 : x
  2. Step 2: Convert to fraction form
    105,324.60/157,986.90 = 100,950.60/x
  3. Step 3: Cross multiply
    105,324.60x = 157,986.90 × 100,950.60
  4. Step 4: Simplify right side
    105,324.60x = 15,948,872,347.14
  5. Step 5: Solve for x
    x = 15,948,872,347.14/105,324.60
  6. Step 6: Final answer
    x = 151,425.90

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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.