Home / 121,011.36-166,986-67,296.48

Finding the Fourth Proportional to 121,011.36, 166,986 and 67,296.48

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Solution

The fourth proportional to 121,011.36, 166,986 and 67,296.48 is: 92,863.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,011.36 : 166,986 = 67,296.48 : x
  2. Step 2: Convert to fraction form
    121,011.36/166,986 = 67,296.48/x
  3. Step 3: Cross multiply
    121,011.36x = 166,986 × 67,296.48
  4. Step 4: Simplify right side
    121,011.36x = 11,237,570,009.28
  5. Step 5: Solve for x
    x = 11,237,570,009.28/121,011.36
  6. Step 6: Final answer
    x = 92,863.76

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1.5x scale

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.