Home / 128,572.32-192,076.61-83,224.26

Finding the Fourth Proportional to 128,572.32, 192,076.61 and 83,224.26

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Solution

The fourth proportional to 128,572.32, 192,076.61 and 83,224.26 is: 124,330.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,572.32 : 192,076.61 = 83,224.26 : x
  2. Step 2: Convert to fraction form
    128,572.32/192,076.61 = 83,224.26/x
  3. Step 3: Cross multiply
    128,572.32x = 192,076.61 × 83,224.26
  4. Step 4: Simplify right side
    128,572.32x = 15,985,433,730.56
  5. Step 5: Solve for x
    x = 15,985,433,730.56/128,572.32
  6. Step 6: Final answer
    x = 124,330.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.