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Finding the Fourth Proportional to 100,607.86, 150,916.40 and 71,157.17

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Solution

The fourth proportional to 100,607.86, 150,916.40 and 71,157.17 is: 106,739.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,607.86 : 150,916.40 = 71,157.17 : x
  2. Step 2: Convert to fraction form
    100,607.86/150,916.40 = 71,157.17/x
  3. Step 3: Cross multiply
    100,607.86x = 150,916.40 × 71,157.17
  4. Step 4: Simplify right side
    100,607.86x = 10,738,782,820.22
  5. Step 5: Solve for x
    x = 10,738,782,820.22/100,607.86
  6. Step 6: Final answer
    x = 106,739.01

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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.