Home / 217,186.56-299,687.04-121,685.76

Finding the Fourth Proportional to 217,186.56, 299,687.04 and 121,685.76

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Solution

The fourth proportional to 217,186.56, 299,687.04 and 121,685.76 is: 167,909.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,186.56 : 299,687.04 = 121,685.76 : x
  2. Step 2: Convert to fraction form
    217,186.56/299,687.04 = 121,685.76/x
  3. Step 3: Cross multiply
    217,186.56x = 299,687.04 × 121,685.76
  4. Step 4: Simplify right side
    217,186.56x = 36,467,645,224.55
  5. Step 5: Solve for x
    x = 36,467,645,224.55/217,186.56
  6. Step 6: Final answer
    x = 167,909.31

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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.