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Finding the Fourth Proportional to 103,970.44, 143,526.90 and 68,161.96

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Solution

The fourth proportional to 103,970.44, 143,526.90 and 68,161.96 is: 94,094.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,970.44 : 143,526.90 = 68,161.96 : x
  2. Step 2: Convert to fraction form
    103,970.44/143,526.90 = 68,161.96/x
  3. Step 3: Cross multiply
    103,970.44x = 143,526.90 × 68,161.96
  4. Step 4: Simplify right side
    103,970.44x = 9,783,074,816.72
  5. Step 5: Solve for x
    x = 9,783,074,816.72/103,970.44
  6. Step 6: Final answer
    x = 94,094.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.