Home / 99,699,375.40-149,549,063.10-86,015,458.60

Finding the Fourth Proportional to 99,699,375.40, 149,549,063.10 and 86,015,458.60

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Solution

The fourth proportional to 99,699,375.40, 149,549,063.10 and 86,015,458.60 is: 129,023,187.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,699,375.40 : 149,549,063.10 = 86,015,458.60 : x
  2. Step 2: Convert to fraction form
    99,699,375.40/149,549,063.10 = 86,015,458.60/x
  3. Step 3: Cross multiply
    99,699,375.40x = 149,549,063.10 × 86,015,458.60
  4. Step 4: Simplify right side
    99,699,375.40x = 12,863,531,245,746,836
  5. Step 5: Solve for x
    x = 12,863,531,245,746,836/99,699,375.40
  6. Step 6: Final answer
    x = 129,023,187.90

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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.