Home / 145,977.78-201,443.22-82,321.50

Finding the Fourth Proportional to 145,977.78, 201,443.22 and 82,321.50

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Solution

The fourth proportional to 145,977.78, 201,443.22 and 82,321.50 is: 113,600.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,977.78 : 201,443.22 = 82,321.50 : x
  2. Step 2: Convert to fraction form
    145,977.78/201,443.22 = 82,321.50/x
  3. Step 3: Cross multiply
    145,977.78x = 201,443.22 × 82,321.50
  4. Step 4: Simplify right side
    145,977.78x = 16,583,108,035.23
  5. Step 5: Solve for x
    x = 16,583,108,035.23/145,977.78
  6. Step 6: Final answer
    x = 113,600.22

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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.