Home / 103,672.12-143,110.86-70,157.56

Finding the Fourth Proportional to 103,672.12, 143,110.86 and 70,157.56

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Solution

The fourth proportional to 103,672.12, 143,110.86 and 70,157.56 is: 96,846.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,672.12 : 143,110.86 = 70,157.56 : x
  2. Step 2: Convert to fraction form
    103,672.12/143,110.86 = 70,157.56/x
  3. Step 3: Cross multiply
    103,672.12x = 143,110.86 × 70,157.56
  4. Step 4: Simplify right side
    103,672.12x = 10,040,308,747.10
  5. Step 5: Solve for x
    x = 10,040,308,747.10/103,672.12
  6. Step 6: Final answer
    x = 96,846.76

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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.