Home / 120,619,694.40-180,730,087.20-69,412,401.60

Finding the Fourth Proportional to 120,619,694.40, 180,730,087.20 and 69,412,401.60

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Solution

The fourth proportional to 120,619,694.40, 180,730,087.20 and 69,412,401.60 is: 104,003,823.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,619,694.40 : 180,730,087.20 = 69,412,401.60 : x
  2. Step 2: Convert to fraction form
    120,619,694.40/180,730,087.20 = 69,412,401.60/x
  3. Step 3: Cross multiply
    120,619,694.40x = 180,730,087.20 × 69,412,401.60
  4. Step 4: Simplify right side
    120,619,694.40x = 12,544,909,393,929,418
  5. Step 5: Solve for x
    x = 12,544,909,393,929,418/120,619,694.40
  6. Step 6: Final answer
    x = 104,003,823.39

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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.