Home / 217,131.96-299,622.06-121,642.68

Finding the Fourth Proportional to 217,131.96, 299,622.06 and 121,642.68

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Solution

The fourth proportional to 217,131.96, 299,622.06 and 121,642.68 is: 167,855.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,131.96 : 299,622.06 = 121,642.68 : x
  2. Step 2: Convert to fraction form
    217,131.96/299,622.06 = 121,642.68/x
  3. Step 3: Cross multiply
    217,131.96x = 299,622.06 × 121,642.68
  4. Step 4: Simplify right side
    217,131.96x = 36,446,830,365.52
  5. Step 5: Solve for x
    x = 36,446,830,365.52/217,131.96
  6. Step 6: Final answer
    x = 167,855.67

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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.