Home / 187,355.57-281,143.31-69,109.34

Finding the Fourth Proportional to 187,355.57, 281,143.31 and 69,109.34

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Solution

The fourth proportional to 187,355.57, 281,143.31 and 69,109.34 is: 103,704.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,355.57 : 281,143.31 = 69,109.34 : x
  2. Step 2: Convert to fraction form
    187,355.57/281,143.31 = 69,109.34/x
  3. Step 3: Cross multiply
    187,355.57x = 281,143.31 × 69,109.34
  4. Step 4: Simplify right side
    187,355.57x = 19,429,626,848.25
  5. Step 5: Solve for x
    x = 19,429,626,848.25/187,355.57
  6. Step 6: Final answer
    x = 103,704.56

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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.