Home / 121,021.36-166,999.80-67,306.48

Finding the Fourth Proportional to 121,021.36, 166,999.80 and 67,306.48

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Solution

The fourth proportional to 121,021.36, 166,999.80 and 67,306.48 is: 92,877.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,021.36 : 166,999.80 = 67,306.48 : x
  2. Step 2: Convert to fraction form
    121,021.36/166,999.80 = 67,306.48/x
  3. Step 3: Cross multiply
    121,021.36x = 166,999.80 × 67,306.48
  4. Step 4: Simplify right side
    121,021.36x = 11,240,168,698.70
  5. Step 5: Solve for x
    x = 11,240,168,698.70/121,021.36
  6. Step 6: Final answer
    x = 92,877.56

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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.