Home / 119,972.80-179,959.20-70,109.20

Finding the Fourth Proportional to 119,972.80, 179,959.20 and 70,109.20

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Solution

The fourth proportional to 119,972.80, 179,959.20 and 70,109.20 is: 105,163.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,972.80 : 179,959.20 = 70,109.20 : x
  2. Step 2: Convert to fraction form
    119,972.80/179,959.20 = 70,109.20/x
  3. Step 3: Cross multiply
    119,972.80x = 179,959.20 × 70,109.20
  4. Step 4: Simplify right side
    119,972.80x = 12,616,795,544.64
  5. Step 5: Solve for x
    x = 12,616,795,544.64/119,972.80
  6. Step 6: Final answer
    x = 105,163.80

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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.