Home / 128,639.07-193,024.50-61,247.37

Finding the Fourth Proportional to 128,639.07, 193,024.50 and 61,247.37

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Solution

The fourth proportional to 128,639.07, 193,024.50 and 61,247.37 is: 91,902.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,639.07 : 193,024.50 = 61,247.37 : x
  2. Step 2: Convert to fraction form
    128,639.07/193,024.50 = 61,247.37/x
  3. Step 3: Cross multiply
    128,639.07x = 193,024.50 × 61,247.37
  4. Step 4: Simplify right side
    128,639.07x = 11,822,242,970.57
  5. Step 5: Solve for x
    x = 11,822,242,970.57/128,639.07
  6. Step 6: Final answer
    x = 91,902.43

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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.