Home / 199,313,400.60-298,970,100.90-78,144,852.60

Finding the Fourth Proportional to 199,313,400.60, 298,970,100.90 and 78,144,852.60

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Solution

The fourth proportional to 199,313,400.60, 298,970,100.90 and 78,144,852.60 is: 117,217,278.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,313,400.60 : 298,970,100.90 = 78,144,852.60 : x
  2. Step 2: Convert to fraction form
    199,313,400.60/298,970,100.90 = 78,144,852.60/x
  3. Step 3: Cross multiply
    199,313,400.60x = 298,970,100.90 × 78,144,852.60
  4. Step 4: Simplify right side
    199,313,400.60x = 23,362,974,466,637,624
  5. Step 5: Solve for x
    x = 23,362,974,466,637,624/199,313,400.60
  6. Step 6: Final answer
    x = 117,217,278.90

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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.