Home / 148,903.74-205,488-80,921.28

Finding the Fourth Proportional to 148,903.74, 205,488 and 80,921.28

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Solution

The fourth proportional to 148,903.74, 205,488 and 80,921.28 is: 111,671.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,903.74 : 205,488 = 80,921.28 : x
  2. Step 2: Convert to fraction form
    148,903.74/205,488 = 80,921.28/x
  3. Step 3: Cross multiply
    148,903.74x = 205,488 × 80,921.28
  4. Step 4: Simplify right side
    148,903.74x = 16,628,351,984.64
  5. Step 5: Solve for x
    x = 16,628,351,984.64/148,903.74
  6. Step 6: Final answer
    x = 111,671.82

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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.