Home / 217,132.96-299,623.44-121,643.68

Finding the Fourth Proportional to 217,132.96, 299,623.44 and 121,643.68

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Solution

The fourth proportional to 217,132.96, 299,623.44 and 121,643.68 is: 167,857.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,132.96 : 299,623.44 = 121,643.68 : x
  2. Step 2: Convert to fraction form
    217,132.96/299,623.44 = 121,643.68/x
  3. Step 3: Cross multiply
    217,132.96x = 299,623.44 × 121,643.68
  4. Step 4: Simplify right side
    217,132.96x = 36,447,297,855.86
  5. Step 5: Solve for x
    x = 36,447,297,855.86/217,132.96
  6. Step 6: Final answer
    x = 167,857.05

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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.