Home / 81,657,352.80-122,486,029.20-74,099,080.80

Finding the Fourth Proportional to 81,657,352.80, 122,486,029.20 and 74,099,080.80

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Solution

The fourth proportional to 81,657,352.80, 122,486,029.20 and 74,099,080.80 is: 111,148,621.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,657,352.80 : 122,486,029.20 = 74,099,080.80 : x
  2. Step 2: Convert to fraction form
    81,657,352.80/122,486,029.20 = 74,099,080.80/x
  3. Step 3: Cross multiply
    81,657,352.80x = 122,486,029.20 × 74,099,080.80
  4. Step 4: Simplify right side
    81,657,352.80x = 9,076,102,174,561,960
  5. Step 5: Solve for x
    x = 9,076,102,174,561,960/81,657,352.80
  6. Step 6: Final answer
    x = 111,148,621.20

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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.