Home / 257,178.72-354,936.96-143,979.60

Finding the Fourth Proportional to 257,178.72, 354,936.96 and 143,979.60

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Solution

The fourth proportional to 257,178.72, 354,936.96 and 143,979.60 is: 198,708.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,178.72 : 354,936.96 = 143,979.60 : x
  2. Step 2: Convert to fraction form
    257,178.72/354,936.96 = 143,979.60/x
  3. Step 3: Cross multiply
    257,178.72x = 354,936.96 × 143,979.60
  4. Step 4: Simplify right side
    257,178.72x = 51,103,681,526.02
  5. Step 5: Solve for x
    x = 51,103,681,526.02/257,178.72
  6. Step 6: Final answer
    x = 198,708.83

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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.