Home / 82,197.15-113,510.44-77,719.22

Finding the Fourth Proportional to 82,197.15, 113,510.44 and 77,719.22

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Solution

The fourth proportional to 82,197.15, 113,510.44 and 77,719.22 is: 107,326.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,197.15 : 113,510.44 = 77,719.22 : x
  2. Step 2: Convert to fraction form
    82,197.15/113,510.44 = 77,719.22/x
  3. Step 3: Cross multiply
    82,197.15x = 113,510.44 × 77,719.22
  4. Step 4: Simplify right side
    82,197.15x = 8,821,942,914.58
  5. Step 5: Solve for x
    x = 8,821,942,914.58/82,197.15
  6. Step 6: Final answer
    x = 107,326.62

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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.