Home / 131,771.16-197,271.18-81,700.20

Finding the Fourth Proportional to 131,771.16, 197,271.18 and 81,700.20

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Solution

The fourth proportional to 131,771.16, 197,271.18 and 81,700.20 is: 122,311.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,771.16 : 197,271.18 = 81,700.20 : x
  2. Step 2: Convert to fraction form
    131,771.16/197,271.18 = 81,700.20/x
  3. Step 3: Cross multiply
    131,771.16x = 197,271.18 × 81,700.20
  4. Step 4: Simplify right side
    131,771.16x = 16,117,094,860.24
  5. Step 5: Solve for x
    x = 16,117,094,860.24/131,771.16
  6. Step 6: Final answer
    x = 122,311.25

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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.