Home / 142,372.81-196,466.03-78,706.81

Finding the Fourth Proportional to 142,372.81, 196,466.03 and 78,706.81

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Solution

The fourth proportional to 142,372.81, 196,466.03 and 78,706.81 is: 108,610.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,372.81 : 196,466.03 = 78,706.81 : x
  2. Step 2: Convert to fraction form
    142,372.81/196,466.03 = 78,706.81/x
  3. Step 3: Cross multiply
    142,372.81x = 196,466.03 × 78,706.81
  4. Step 4: Simplify right side
    142,372.81x = 15,463,214,494.66
  5. Step 5: Solve for x
    x = 15,463,214,494.66/142,372.81
  6. Step 6: Final answer
    x = 108,610.73

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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.