Home / 128,896,099,408.80-177,868,602,522.78-71,021,240,489.84

Finding the Fourth Proportional to 128,896,099,408.80, 177,868,602,522.78 and 71,021,240,489.84

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Solution

The fourth proportional to 128,896,099,408.80, 177,868,602,522.78 and 71,021,240,489.84 is: 98,004,895,829.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,896,099,408.80 : 177,868,602,522.78 = 71,021,240,489.84 : x
  2. Step 2: Convert to fraction form
    128,896,099,408.80/177,868,602,522.78 = 71,021,240,489.84/x
  3. Step 3: Cross multiply
    128,896,099,408.80x = 177,868,602,522.78 × 71,021,240,489.84
  4. Step 4: Simplify right side
    128,896,099,408.80x = 12,632,448,795,362,119,909,376
  5. Step 5: Solve for x
    x = 12,632,448,795,362,119,909,376/128,896,099,408.80
  6. Step 6: Final answer
    x = 98,004,895,829.30

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