Home / 80,571,290.20-120,856,935.30-69,611,795.80

Finding the Fourth Proportional to 80,571,290.20, 120,856,935.30 and 69,611,795.80

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Solution

The fourth proportional to 80,571,290.20, 120,856,935.30 and 69,611,795.80 is: 104,417,693.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,571,290.20 : 120,856,935.30 = 69,611,795.80 : x
  2. Step 2: Convert to fraction form
    80,571,290.20/120,856,935.30 = 69,611,795.80/x
  3. Step 3: Cross multiply
    80,571,290.20x = 120,856,935.30 × 69,611,795.80
  4. Step 4: Simplify right side
    80,571,290.20x = 8,413,068,301,117,411
  5. Step 5: Solve for x
    x = 8,413,068,301,117,411/80,571,290.20
  6. Step 6: Final answer
    x = 104,417,693.70

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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.