Home / 142,767.80-213,690.90-131,708.60

Finding the Fourth Proportional to 142,767.80, 213,690.90 and 131,708.60

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Solution

The fourth proportional to 142,767.80, 213,690.90 and 131,708.60 is: 197,137.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,767.80 : 213,690.90 = 131,708.60 : x
  2. Step 2: Convert to fraction form
    142,767.80/213,690.90 = 131,708.60/x
  3. Step 3: Cross multiply
    142,767.80x = 213,690.90 × 131,708.60
  4. Step 4: Simplify right side
    142,767.80x = 28,144,929,271.74
  5. Step 5: Solve for x
    x = 28,144,929,271.74/142,767.80
  6. Step 6: Final answer
    x = 197,137.79

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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.