Home / 107,438.80-161,231.10-69,907.45

Finding the Fourth Proportional to 107,438.80, 161,231.10 and 69,907.45

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Solution

The fourth proportional to 107,438.80, 161,231.10 and 69,907.45 is: 104,908.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,438.80 : 161,231.10 = 69,907.45 : x
  2. Step 2: Convert to fraction form
    107,438.80/161,231.10 = 69,907.45/x
  3. Step 3: Cross multiply
    107,438.80x = 161,231.10 × 69,907.45
  4. Step 4: Simplify right side
    107,438.80x = 11,271,255,061.70
  5. Step 5: Solve for x
    x = 11,271,255,061.70/107,438.80
  6. Step 6: Final answer
    x = 104,908.61

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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.