Home / 148,004.10-221,896.80-81,519.30

Finding the Fourth Proportional to 148,004.10, 221,896.80 and 81,519.30

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Solution

The fourth proportional to 148,004.10, 221,896.80 and 81,519.30 is: 122,218.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,004.10 : 221,896.80 = 81,519.30 : x
  2. Step 2: Convert to fraction form
    148,004.10/221,896.80 = 81,519.30/x
  3. Step 3: Cross multiply
    148,004.10x = 221,896.80 × 81,519.30
  4. Step 4: Simplify right side
    148,004.10x = 18,088,871,808.24
  5. Step 5: Solve for x
    x = 18,088,871,808.24/148,004.10
  6. Step 6: Final answer
    x = 122,218.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.