Home / 105,970.87-146,178.97-66,157.75

Finding the Fourth Proportional to 105,970.87, 146,178.97 and 66,157.75

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Solution

The fourth proportional to 105,970.87, 146,178.97 and 66,157.75 is: 91,259.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,970.87 : 146,178.97 = 66,157.75 : x
  2. Step 2: Convert to fraction form
    105,970.87/146,178.97 = 66,157.75/x
  3. Step 3: Cross multiply
    105,970.87x = 146,178.97 × 66,157.75
  4. Step 4: Simplify right side
    105,970.87x = 9,670,871,752.52
  5. Step 5: Solve for x
    x = 9,670,871,752.52/105,970.87
  6. Step 6: Final answer
    x = 91,259.72

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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.