Home / 146,065.12-201,570-78,997.12

Finding the Fourth Proportional to 146,065.12, 201,570 and 78,997.12

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Solution

The fourth proportional to 146,065.12, 201,570 and 78,997.12 is: 109,016.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,065.12 : 201,570 = 78,997.12 : x
  2. Step 2: Convert to fraction form
    146,065.12/201,570 = 78,997.12/x
  3. Step 3: Cross multiply
    146,065.12x = 201,570 × 78,997.12
  4. Step 4: Simplify right side
    146,065.12x = 15,923,449,478.40
  5. Step 5: Solve for x
    x = 15,923,449,478.40/146,065.12
  6. Step 6: Final answer
    x = 109,016.10

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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.