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Finding the Fourth Proportional to 103,669.60, 155,504.40 and 68,034.40

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Solution

The fourth proportional to 103,669.60, 155,504.40 and 68,034.40 is: 102,051.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,669.60 : 155,504.40 = 68,034.40 : x
  2. Step 2: Convert to fraction form
    103,669.60/155,504.40 = 68,034.40/x
  3. Step 3: Cross multiply
    103,669.60x = 155,504.40 × 68,034.40
  4. Step 4: Simplify right side
    103,669.60x = 10,579,648,551.36
  5. Step 5: Solve for x
    x = 10,579,648,551.36/103,669.60
  6. Step 6: Final answer
    x = 102,051.60

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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.