Home / 139,853,449.20-209,496,738.60-79,198,316.40

Finding the Fourth Proportional to 139,853,449.20, 209,496,738.60 and 79,198,316.40

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Solution

The fourth proportional to 139,853,449.20, 209,496,738.60 and 79,198,316.40 is: 118,636,966.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,853,449.20 : 209,496,738.60 = 79,198,316.40 : x
  2. Step 2: Convert to fraction form
    139,853,449.20/209,496,738.60 = 79,198,316.40/x
  3. Step 3: Cross multiply
    139,853,449.20x = 209,496,738.60 × 79,198,316.40
  4. Step 4: Simplify right side
    139,853,449.20x = 16,591,788,988,410,894
  5. Step 5: Solve for x
    x = 16,591,788,988,410,894/139,853,449.20
  6. Step 6: Final answer
    x = 118,636,966.65

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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.