Home / 216,128.22-324,206.10-89,778.75

Finding the Fourth Proportional to 216,128.22, 324,206.10 and 89,778.75

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Solution

The fourth proportional to 216,128.22, 324,206.10 and 89,778.75 is: 134,673.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,128.22 : 324,206.10 = 89,778.75 : x
  2. Step 2: Convert to fraction form
    216,128.22/324,206.10 = 89,778.75/x
  3. Step 3: Cross multiply
    216,128.22x = 324,206.10 × 89,778.75
  4. Step 4: Simplify right side
    216,128.22x = 29,106,818,400.38
  5. Step 5: Solve for x
    x = 29,106,818,400.38/216,128.22
  6. Step 6: Final answer
    x = 134,673.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.