Home / 142,990.40-197,350.44-79,348.64

Finding the Fourth Proportional to 142,990.40, 197,350.44 and 79,348.64

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Solution

The fourth proportional to 142,990.40, 197,350.44 and 79,348.64 is: 109,514.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,990.40 : 197,350.44 = 79,348.64 : x
  2. Step 2: Convert to fraction form
    142,990.40/197,350.44 = 79,348.64/x
  3. Step 3: Cross multiply
    142,990.40x = 197,350.44 × 79,348.64
  4. Step 4: Simplify right side
    142,990.40x = 15,659,489,017.40
  5. Step 5: Solve for x
    x = 15,659,489,017.40/142,990.40
  6. Step 6: Final answer
    x = 109,514.27

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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.