Home / 148,970.74-205,583.59-80,992.28

Finding the Fourth Proportional to 148,970.74, 205,583.59 and 80,992.28

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Solution

The fourth proportional to 148,970.74, 205,583.59 and 80,992.28 is: 111,771.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,970.74 : 205,583.59 = 80,992.28 : x
  2. Step 2: Convert to fraction form
    148,970.74/205,583.59 = 80,992.28/x
  3. Step 3: Cross multiply
    148,970.74x = 205,583.59 × 80,992.28
  4. Step 4: Simplify right side
    148,970.74x = 16,650,684,816.78
  5. Step 5: Solve for x
    x = 16,650,684,816.78/148,970.74
  6. Step 6: Final answer
    x = 111,771.51

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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.