Home / 128,777,033.50-177,758,531.48-76,565,944.60

Finding the Fourth Proportional to 128,777,033.50, 177,758,531.48 and 76,565,944.60

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Solution

The fourth proportional to 128,777,033.50, 177,758,531.48 and 76,565,944.60 is: 105,688,487.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,777,033.50 : 177,758,531.48 = 76,565,944.60 : x
  2. Step 2: Convert to fraction form
    128,777,033.50/177,758,531.48 = 76,565,944.60/x
  3. Step 3: Cross multiply
    128,777,033.50x = 177,758,531.48 × 76,565,944.60
  4. Step 4: Simplify right side
    128,777,033.50x = 13,610,249,873,728,018
  5. Step 5: Solve for x
    x = 13,610,249,873,728,018/128,777,033.50
  6. Step 6: Final answer
    x = 105,688,487.33

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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.