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Finding the Fourth Proportional to 103,242.45, 154,830.87 and 70,175.01

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Solution

The fourth proportional to 103,242.45, 154,830.87 and 70,175.01 is: 105,240.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,242.45 : 154,830.87 = 70,175.01 : x
  2. Step 2: Convert to fraction form
    103,242.45/154,830.87 = 70,175.01/x
  3. Step 3: Cross multiply
    103,242.45x = 154,830.87 × 70,175.01
  4. Step 4: Simplify right side
    103,242.45x = 10,865,257,850.56
  5. Step 5: Solve for x
    x = 10,865,257,850.56/103,242.45
  6. Step 6: Final answer
    x = 105,240.22

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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.