Home / 88,471,817.41-122,143,480.30-78,655,147.20

Finding the Fourth Proportional to 88,471,817.41, 122,143,480.30 and 78,655,147.20

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Solution

The fourth proportional to 88,471,817.41, 122,143,480.30 and 78,655,147.20 is: 108,590,664.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,471,817.41 : 122,143,480.30 = 78,655,147.20 : x
  2. Step 2: Convert to fraction form
    88,471,817.41/122,143,480.30 = 78,655,147.20/x
  3. Step 3: Cross multiply
    88,471,817.41x = 122,143,480.30 × 78,655,147.20
  4. Step 4: Simplify right side
    88,471,817.41x = 9,607,213,422,615,120
  5. Step 5: Solve for x
    x = 9,607,213,422,615,120/88,471,817.41
  6. Step 6: Final answer
    x = 108,590,664.28

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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.