Home / 126,369.92-174,429.10-77,986.64

Finding the Fourth Proportional to 126,369.92, 174,429.10 and 77,986.64

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Solution

The fourth proportional to 126,369.92, 174,429.10 and 77,986.64 is: 107,645.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,369.92 : 174,429.10 = 77,986.64 : x
  2. Step 2: Convert to fraction form
    126,369.92/174,429.10 = 77,986.64/x
  3. Step 3: Cross multiply
    126,369.92x = 174,429.10 × 77,986.64
  4. Step 4: Simplify right side
    126,369.92x = 13,603,139,427.22
  5. Step 5: Solve for x
    x = 13,603,139,427.22/126,369.92
  6. Step 6: Final answer
    x = 107,645.39

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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.