Home / 105,171.86-145,137.06-57,425.19

Finding the Fourth Proportional to 105,171.86, 145,137.06 and 57,425.19

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Solution

The fourth proportional to 105,171.86, 145,137.06 and 57,425.19 is: 79,246.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,171.86 : 145,137.06 = 57,425.19 : x
  2. Step 2: Convert to fraction form
    105,171.86/145,137.06 = 57,425.19/x
  3. Step 3: Cross multiply
    105,171.86x = 145,137.06 × 57,425.19
  4. Step 4: Simplify right side
    105,171.86x = 8,334,523,246.54
  5. Step 5: Solve for x
    x = 8,334,523,246.54/105,171.86
  6. Step 6: Final answer
    x = 79,246.71

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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.