Home / 80,075,009.20-120,112,513.80-19,490,735.20

Finding the Fourth Proportional to 80,075,009.20, 120,112,513.80 and 19,490,735.20

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Solution

The fourth proportional to 80,075,009.20, 120,112,513.80 and 19,490,735.20 is: 29,236,102.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,075,009.20 : 120,112,513.80 = 19,490,735.20 : x
  2. Step 2: Convert to fraction form
    80,075,009.20/120,112,513.80 = 19,490,735.20/x
  3. Step 3: Cross multiply
    80,075,009.20x = 120,112,513.80 × 19,490,735.20
  4. Step 4: Simplify right side
    80,075,009.20x = 2,341,081,200,682,145.50
  5. Step 5: Solve for x
    x = 2,341,081,200,682,145.50/80,075,009.20
  6. Step 6: Final answer
    x = 29,236,102.80

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1.5x scale

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.