Home / 122,021.72-168,390.04-68,306.84

Finding the Fourth Proportional to 122,021.72, 168,390.04 and 68,306.84

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Solution

The fourth proportional to 122,021.72, 168,390.04 and 68,306.84 is: 94,263.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,021.72 : 168,390.04 = 68,306.84 : x
  2. Step 2: Convert to fraction form
    122,021.72/168,390.04 = 68,306.84/x
  3. Step 3: Cross multiply
    122,021.72x = 168,390.04 × 68,306.84
  4. Step 4: Simplify right side
    122,021.72x = 11,502,191,519.87
  5. Step 5: Solve for x
    x = 11,502,191,519.87/122,021.72
  6. Step 6: Final answer
    x = 94,263.48

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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.