Home / 128,908,651.32-193,292,300.82-51,106,738.68

Finding the Fourth Proportional to 128,908,651.32, 193,292,300.82 and 51,106,738.68

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Solution

The fourth proportional to 128,908,651.32, 193,292,300.82 and 51,106,738.68 is: 76,632,087.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,908,651.32 : 193,292,300.82 = 51,106,738.68 : x
  2. Step 2: Convert to fraction form
    128,908,651.32/193,292,300.82 = 51,106,738.68/x
  3. Step 3: Cross multiply
    128,908,651.32x = 193,292,300.82 × 51,106,738.68
  4. Step 4: Simplify right side
    128,908,651.32x = 9,878,539,106,863,690
  5. Step 5: Solve for x
    x = 9,878,539,106,863,690/128,908,651.32
  6. Step 6: Final answer
    x = 76,632,087.96

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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.