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Finding the Fourth Proportional to 123,810.36, 170,868.87 and 70,104.84

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Solution

The fourth proportional to 123,810.36, 170,868.87 and 70,104.84 is: 96,750.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,810.36 : 170,868.87 = 70,104.84 : x
  2. Step 2: Convert to fraction form
    123,810.36/170,868.87 = 70,104.84/x
  3. Step 3: Cross multiply
    123,810.36x = 170,868.87 × 70,104.84
  4. Step 4: Simplify right side
    123,810.36x = 11,978,734,792.33
  5. Step 5: Solve for x
    x = 11,978,734,792.33/123,810.36
  6. Step 6: Final answer
    x = 96,750.67

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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.