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Finding the Fourth Proportional to 103,442.10, 155,163.15 and 64,076.10

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Solution

The fourth proportional to 103,442.10, 155,163.15 and 64,076.10 is: 96,114.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,442.10 : 155,163.15 = 64,076.10 : x
  2. Step 2: Convert to fraction form
    103,442.10/155,163.15 = 64,076.10/x
  3. Step 3: Cross multiply
    103,442.10x = 155,163.15 × 64,076.10
  4. Step 4: Simplify right side
    103,442.10x = 9,942,249,515.72
  5. Step 5: Solve for x
    x = 9,942,249,515.72/103,442.10
  6. Step 6: Final answer
    x = 96,114.15

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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.