Home / 142,519.10-196,668.14-78,853.10

Finding the Fourth Proportional to 142,519.10, 196,668.14 and 78,853.10

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Solution

The fourth proportional to 142,519.10, 196,668.14 and 78,853.10 is: 108,812.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,519.10 : 196,668.14 = 78,853.10 : x
  2. Step 2: Convert to fraction form
    142,519.10/196,668.14 = 78,853.10/x
  3. Step 3: Cross multiply
    142,519.10x = 196,668.14 × 78,853.10
  4. Step 4: Simplify right side
    142,519.10x = 15,507,891,132.63
  5. Step 5: Solve for x
    x = 15,507,891,132.63/142,519.10
  6. Step 6: Final answer
    x = 108,812.73

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1.5x scale

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.