Home / 122,021.52-168,388.80-68,306.40

Finding the Fourth Proportional to 122,021.52, 168,388.80 and 68,306.40

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Solution

The fourth proportional to 122,021.52, 168,388.80 and 68,306.40 is: 94,262.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,021.52 : 168,388.80 = 68,306.40 : x
  2. Step 2: Convert to fraction form
    122,021.52/168,388.80 = 68,306.40/x
  3. Step 3: Cross multiply
    122,021.52x = 168,388.80 × 68,306.40
  4. Step 4: Simplify right side
    122,021.52x = 11,502,032,728.32
  5. Step 5: Solve for x
    x = 11,502,032,728.32/122,021.52
  6. Step 6: Final answer
    x = 94,262.33

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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.