Home / 215,923.78-297,975.27-120,428.02

Finding the Fourth Proportional to 215,923.78, 297,975.27 and 120,428.02

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Solution

The fourth proportional to 215,923.78, 297,975.27 and 120,428.02 is: 166,190.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,923.78 : 297,975.27 = 120,428.02 : x
  2. Step 2: Convert to fraction form
    215,923.78/297,975.27 = 120,428.02/x
  3. Step 3: Cross multiply
    215,923.78x = 297,975.27 × 120,428.02
  4. Step 4: Simplify right side
    215,923.78x = 35,884,571,775.07
  5. Step 5: Solve for x
    x = 35,884,571,775.07/215,923.78
  6. Step 6: Final answer
    x = 166,190.92

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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.