Home / 88,021.89-121,495.14-72,144.27

Finding the Fourth Proportional to 88,021.89, 121,495.14 and 72,144.27

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Solution

The fourth proportional to 88,021.89, 121,495.14 and 72,144.27 is: 99,579.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,021.89 : 121,495.14 = 72,144.27 : x
  2. Step 2: Convert to fraction form
    88,021.89/121,495.14 = 72,144.27/x
  3. Step 3: Cross multiply
    88,021.89x = 121,495.14 × 72,144.27
  4. Step 4: Simplify right side
    88,021.89x = 8,765,178,183.85
  5. Step 5: Solve for x
    x = 8,765,178,183.85/88,021.89
  6. Step 6: Final answer
    x = 99,579.53

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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.