Home / 128,447.58-177,427.09-98,601.72

Finding the Fourth Proportional to 128,447.58, 177,427.09 and 98,601.72

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Solution

The fourth proportional to 128,447.58, 177,427.09 and 98,601.72 is: 136,200.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,447.58 : 177,427.09 = 98,601.72 : x
  2. Step 2: Convert to fraction form
    128,447.58/177,427.09 = 98,601.72/x
  3. Step 3: Cross multiply
    128,447.58x = 177,427.09 × 98,601.72
  4. Step 4: Simplify right side
    128,447.58x = 17,494,615,706.50
  5. Step 5: Solve for x
    x = 17,494,615,706.50/128,447.58
  6. Step 6: Final answer
    x = 136,200.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.