Home / 121,800.48-168,001.26-79,416.42

Finding the Fourth Proportional to 121,800.48, 168,001.26 and 79,416.42

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Solution

The fourth proportional to 121,800.48, 168,001.26 and 79,416.42 is: 109,540.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,800.48 : 168,001.26 = 79,416.42 : x
  2. Step 2: Convert to fraction form
    121,800.48/168,001.26 = 79,416.42/x
  3. Step 3: Cross multiply
    121,800.48x = 168,001.26 × 79,416.42
  4. Step 4: Simplify right side
    121,800.48x = 13,342,058,624.69
  5. Step 5: Solve for x
    x = 13,342,058,624.69/121,800.48
  6. Step 6: Final answer
    x = 109,540.28

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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.