Home / 128,453,998.37-177,268,218.44-69,717,367.58

Finding the Fourth Proportional to 128,453,998.37, 177,268,218.44 and 69,717,367.58

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Solution

The fourth proportional to 128,453,998.37, 177,268,218.44 and 69,717,367.58 is: 96,210,890.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,453,998.37 : 177,268,218.44 = 69,717,367.58 : x
  2. Step 2: Convert to fraction form
    128,453,998.37/177,268,218.44 = 69,717,367.58/x
  3. Step 3: Cross multiply
    128,453,998.37x = 177,268,218.44 × 69,717,367.58
  4. Step 4: Simplify right side
    128,453,998.37x = 12,358,673,545,233,214
  5. Step 5: Solve for x
    x = 12,358,673,545,233,214/128,453,998.37
  6. Step 6: Final answer
    x = 96,210,890.30

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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.