Home / 257,135.23-385,698.74-70,146.73

Finding the Fourth Proportional to 257,135.23, 385,698.74 and 70,146.73

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Solution

The fourth proportional to 257,135.23, 385,698.74 and 70,146.73 is: 105,218.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,135.23 : 385,698.74 = 70,146.73 : x
  2. Step 2: Convert to fraction form
    257,135.23/385,698.74 = 70,146.73/x
  3. Step 3: Cross multiply
    257,135.23x = 385,698.74 × 70,146.73
  4. Step 4: Simplify right side
    257,135.23x = 27,055,505,376.12
  5. Step 5: Solve for x
    x = 27,055,505,376.12/257,135.23
  6. Step 6: Final answer
    x = 105,218.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.