Home / 128,682.20-193,041.94-39,942.84

Finding the Fourth Proportional to 128,682.20, 193,041.94 and 39,942.84

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Solution

The fourth proportional to 128,682.20, 193,041.94 and 39,942.84 is: 59,920.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,682.20 : 193,041.94 = 39,942.84 : x
  2. Step 2: Convert to fraction form
    128,682.20/193,041.94 = 39,942.84/x
  3. Step 3: Cross multiply
    128,682.20x = 193,041.94 × 39,942.84
  4. Step 4: Simplify right side
    128,682.20x = 7,710,643,322.71
  5. Step 5: Solve for x
    x = 7,710,643,322.71/128,682.20
  6. Step 6: Final answer
    x = 59,920.05

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1.5x scale

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.