Home / 81,700.16-122,653.94-69,465.92

Finding the Fourth Proportional to 81,700.16, 122,653.94 and 69,465.92

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Solution

The fourth proportional to 81,700.16, 122,653.94 and 69,465.92 is: 104,287.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,700.16 : 122,653.94 = 69,465.92 : x
  2. Step 2: Convert to fraction form
    81,700.16/122,653.94 = 69,465.92/x
  3. Step 3: Cross multiply
    81,700.16x = 122,653.94 × 69,465.92
  4. Step 4: Simplify right side
    81,700.16x = 8,520,268,783.72
  5. Step 5: Solve for x
    x = 8,520,268,783.72/81,700.16
  6. Step 6: Final answer
    x = 104,287.05

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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.