Home / 148,644.05-205,127.75-80,659.30

Finding the Fourth Proportional to 148,644.05, 205,127.75 and 80,659.30

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Solution

The fourth proportional to 148,644.05, 205,127.75 and 80,659.30 is: 111,309.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,644.05 : 205,127.75 = 80,659.30 : x
  2. Step 2: Convert to fraction form
    148,644.05/205,127.75 = 80,659.30/x
  3. Step 3: Cross multiply
    148,644.05x = 205,127.75 × 80,659.30
  4. Step 4: Simplify right side
    148,644.05x = 16,545,459,809.46
  5. Step 5: Solve for x
    x = 16,545,459,809.46/148,644.05
  6. Step 6: Final answer
    x = 111,309.26

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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.