Home / 208,103,841.60-312,155,762.40-131,177,428.80

Finding the Fourth Proportional to 208,103,841.60, 312,155,762.40 and 131,177,428.80

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Solution

The fourth proportional to 208,103,841.60, 312,155,762.40 and 131,177,428.80 is: 196,766,143.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,103,841.60 : 312,155,762.40 = 131,177,428.80 : x
  2. Step 2: Convert to fraction form
    208,103,841.60/312,155,762.40 = 131,177,428.80/x
  3. Step 3: Cross multiply
    208,103,841.60x = 312,155,762.40 × 131,177,428.80
  4. Step 4: Simplify right side
    208,103,841.60x = 40,947,790,296,735,712
  5. Step 5: Solve for x
    x = 40,947,790,296,735,712/208,103,841.60
  6. Step 6: Final answer
    x = 196,766,143.20

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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.