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Finding the Fourth Proportional to 103,461.15, 154,928.21 and 68,293.47

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Solution

The fourth proportional to 103,461.15, 154,928.21 and 68,293.47 is: 102,266.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,461.15 : 154,928.21 = 68,293.47 : x
  2. Step 2: Convert to fraction form
    103,461.15/154,928.21 = 68,293.47/x
  3. Step 3: Cross multiply
    103,461.15x = 154,928.21 × 68,293.47
  4. Step 4: Simplify right side
    103,461.15x = 10,580,584,720.32
  5. Step 5: Solve for x
    x = 10,580,584,720.32/103,461.15
  6. Step 6: Final answer
    x = 102,266.26

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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.