Home / 105,698.38-145,872.93-57,961.03

Finding the Fourth Proportional to 105,698.38, 145,872.93 and 57,961.03

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Solution

The fourth proportional to 105,698.38, 145,872.93 and 57,961.03 is: 79,991.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,698.38 : 145,872.93 = 57,961.03 : x
  2. Step 2: Convert to fraction form
    105,698.38/145,872.93 = 57,961.03/x
  3. Step 3: Cross multiply
    105,698.38x = 145,872.93 × 57,961.03
  4. Step 4: Simplify right side
    105,698.38x = 8,454,945,271.92
  5. Step 5: Solve for x
    x = 8,454,945,271.92/105,698.38
  6. Step 6: Final answer
    x = 79,991.25

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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.