Home / 279,976.04-420,048.84-100,037.90

Finding the Fourth Proportional to 279,976.04, 420,048.84 and 100,037.90

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Solution

The fourth proportional to 279,976.04, 420,048.84 and 100,037.90 is: 150,087.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,976.04 : 420,048.84 = 100,037.90 : x
  2. Step 2: Convert to fraction form
    279,976.04/420,048.84 = 100,037.90/x
  3. Step 3: Cross multiply
    279,976.04x = 420,048.84 × 100,037.90
  4. Step 4: Simplify right side
    279,976.04x = 42,020,803,851.04
  5. Step 5: Solve for x
    x = 42,020,803,851.04/279,976.04
  6. Step 6: Final answer
    x = 150,087.14

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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.