Home / 200,202,421.20-300,303,631.80-85,190,715.60

Finding the Fourth Proportional to 200,202,421.20, 300,303,631.80 and 85,190,715.60

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Solution

The fourth proportional to 200,202,421.20, 300,303,631.80 and 85,190,715.60 is: 127,786,073.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,202,421.20 : 300,303,631.80 = 85,190,715.60 : x
  2. Step 2: Convert to fraction form
    200,202,421.20/300,303,631.80 = 85,190,715.60/x
  3. Step 3: Cross multiply
    200,202,421.20x = 300,303,631.80 × 85,190,715.60
  4. Step 4: Simplify right side
    200,202,421.20x = 25,583,081,290,320,916
  5. Step 5: Solve for x
    x = 25,583,081,290,320,916/200,202,421.20
  6. Step 6: Final answer
    x = 127,786,073.40

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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.