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Finding the Fourth Proportional to 152,308.53, 228,509.51 and 68,139.54

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Solution

The fourth proportional to 152,308.53, 228,509.51 and 68,139.54 is: 102,230.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,308.53 : 228,509.51 = 68,139.54 : x
  2. Step 2: Convert to fraction form
    152,308.53/228,509.51 = 68,139.54/x
  3. Step 3: Cross multiply
    152,308.53x = 228,509.51 × 68,139.54
  4. Step 4: Simplify right side
    152,308.53x = 15,570,532,556.33
  5. Step 5: Solve for x
    x = 15,570,532,556.33/152,308.53
  6. Step 6: Final answer
    x = 102,230.21

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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.