Home / 105,705.59-145,872.60-57,958.85

Finding the Fourth Proportional to 105,705.59, 145,872.60 and 57,958.85

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Solution

The fourth proportional to 105,705.59, 145,872.60 and 57,958.85 is: 79,982.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,705.59 : 145,872.60 = 57,958.85 : x
  2. Step 2: Convert to fraction form
    105,705.59/145,872.60 = 57,958.85/x
  3. Step 3: Cross multiply
    105,705.59x = 145,872.60 × 57,958.85
  4. Step 4: Simplify right side
    105,705.59x = 8,454,607,413.15
  5. Step 5: Solve for x
    x = 8,454,607,413.15/105,705.59
  6. Step 6: Final answer
    x = 79,982.60

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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.