Home / 105,690.41-145,858.35-57,945.77

Finding the Fourth Proportional to 105,690.41, 145,858.35 and 57,945.77

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Solution

The fourth proportional to 105,690.41, 145,858.35 and 57,945.77 is: 79,968.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,690.41 : 145,858.35 = 57,945.77 : x
  2. Step 2: Convert to fraction form
    105,690.41/145,858.35 = 57,945.77/x
  3. Step 3: Cross multiply
    105,690.41x = 145,858.35 × 57,945.77
  4. Step 4: Simplify right side
    105,690.41x = 8,451,873,672.39
  5. Step 5: Solve for x
    x = 8,451,873,672.39/105,690.41
  6. Step 6: Final answer
    x = 79,968.22

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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.