Home / 84,259,271.40-126,388,907.10-74,517,498.60

Finding the Fourth Proportional to 84,259,271.40, 126,388,907.10 and 74,517,498.60

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Solution

The fourth proportional to 84,259,271.40, 126,388,907.10 and 74,517,498.60 is: 111,776,247.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,259,271.40 : 126,388,907.10 = 74,517,498.60 : x
  2. Step 2: Convert to fraction form
    84,259,271.40/126,388,907.10 = 74,517,498.60/x
  3. Step 3: Cross multiply
    84,259,271.40x = 126,388,907.10 × 74,517,498.60
  4. Step 4: Simplify right side
    84,259,271.40x = 9,418,185,207,879,778
  5. Step 5: Solve for x
    x = 9,418,185,207,879,778/84,259,271.40
  6. Step 6: Final answer
    x = 111,776,247.90

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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.