Home / 105,724.68-145,902.06-57,975.18

Finding the Fourth Proportional to 105,724.68, 145,902.06 and 57,975.18

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Solution

The fourth proportional to 105,724.68, 145,902.06 and 57,975.18 is: 80,006.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,724.68 : 145,902.06 = 57,975.18 : x
  2. Step 2: Convert to fraction form
    105,724.68/145,902.06 = 57,975.18/x
  3. Step 3: Cross multiply
    105,724.68x = 145,902.06 × 57,975.18
  4. Step 4: Simplify right side
    105,724.68x = 8,458,698,190.87
  5. Step 5: Solve for x
    x = 8,458,698,190.87/105,724.68
  6. Step 6: Final answer
    x = 80,006.85

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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.