Home / 142,721.40-196,556.04-139,621.95

Finding the Fourth Proportional to 142,721.40, 196,556.04 and 139,621.95

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Solution

The fourth proportional to 142,721.40, 196,556.04 and 139,621.95 is: 192,287.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,721.40 : 196,556.04 = 139,621.95 : x
  2. Step 2: Convert to fraction form
    142,721.40/196,556.04 = 139,621.95/x
  3. Step 3: Cross multiply
    142,721.40x = 196,556.04 × 139,621.95
  4. Step 4: Simplify right side
    142,721.40x = 27,443,537,589.08
  5. Step 5: Solve for x
    x = 27,443,537,589.08/142,721.40
  6. Step 6: Final answer
    x = 192,287.47

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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.