Home / 208,768,021.80-313,152,032.70-65,142,191.40

Finding the Fourth Proportional to 208,768,021.80, 313,152,032.70 and 65,142,191.40

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Solution

The fourth proportional to 208,768,021.80, 313,152,032.70 and 65,142,191.40 is: 97,713,287.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,768,021.80 : 313,152,032.70 = 65,142,191.40 : x
  2. Step 2: Convert to fraction form
    208,768,021.80/313,152,032.70 = 65,142,191.40/x
  3. Step 3: Cross multiply
    208,768,021.80x = 313,152,032.70 × 65,142,191.40
  4. Step 4: Simplify right side
    208,768,021.80x = 20,399,409,651,442,456
  5. Step 5: Solve for x
    x = 20,399,409,651,442,456/208,768,021.80
  6. Step 6: Final answer
    x = 97,713,287.10

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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.