Home / 105,911.04-158,866.58-31,031.21

Finding the Fourth Proportional to 105,911.04, 158,866.58 and 31,031.21

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Solution

The fourth proportional to 105,911.04, 158,866.58 and 31,031.21 is: 46,546.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,911.04 : 158,866.58 = 31,031.21 : x
  2. Step 2: Convert to fraction form
    105,911.04/158,866.58 = 31,031.21/x
  3. Step 3: Cross multiply
    105,911.04x = 158,866.58 × 31,031.21
  4. Step 4: Simplify right side
    105,911.04x = 4,929,821,256.47
  5. Step 5: Solve for x
    x = 4,929,821,256.47/105,911.04
  6. Step 6: Final answer
    x = 46,546.81

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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.