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Finding the Fourth Proportional to 103,732.60, 155,210.10 and 68,740.60

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Solution

The fourth proportional to 103,732.60, 155,210.10 and 68,740.60 is: 102,853.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,732.60 : 155,210.10 = 68,740.60 : x
  2. Step 2: Convert to fraction form
    103,732.60/155,210.10 = 68,740.60/x
  3. Step 3: Cross multiply
    103,732.60x = 155,210.10 × 68,740.60
  4. Step 4: Simplify right side
    103,732.60x = 10,669,235,400.06
  5. Step 5: Solve for x
    x = 10,669,235,400.06/103,732.60
  6. Step 6: Final answer
    x = 102,853.25

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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.