Home / 100,508,743.10-150,763,114.65-90,305,075.90

Finding the Fourth Proportional to 100,508,743.10, 150,763,114.65 and 90,305,075.90

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Solution

The fourth proportional to 100,508,743.10, 150,763,114.65 and 90,305,075.90 is: 135,457,613.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,508,743.10 : 150,763,114.65 = 90,305,075.90 : x
  2. Step 2: Convert to fraction form
    100,508,743.10/150,763,114.65 = 90,305,075.90/x
  3. Step 3: Cross multiply
    100,508,743.10x = 150,763,114.65 × 90,305,075.90
  4. Step 4: Simplify right side
    100,508,743.10x = 13,614,674,511,388,654
  5. Step 5: Solve for x
    x = 13,614,674,511,388,654/100,508,743.10
  6. Step 6: Final answer
    x = 135,457,613.85

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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.