Home / 128,880.46-193,243.03-57,790.23

Finding the Fourth Proportional to 128,880.46, 193,243.03 and 57,790.23

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Solution

The fourth proportional to 128,880.46, 193,243.03 and 57,790.23 is: 86,650.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,880.46 : 193,243.03 = 57,790.23 : x
  2. Step 2: Convert to fraction form
    128,880.46/193,243.03 = 57,790.23/x
  3. Step 3: Cross multiply
    128,880.46x = 193,243.03 × 57,790.23
  4. Step 4: Simplify right side
    128,880.46x = 11,167,558,280.46
  5. Step 5: Solve for x
    x = 11,167,558,280.46/128,880.46
  6. Step 6: Final answer
    x = 86,650.52

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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.