Home / 120,213,964.80-180,320,947.20-69,195,628.80

Finding the Fourth Proportional to 120,213,964.80, 180,320,947.20 and 69,195,628.80

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Solution

The fourth proportional to 120,213,964.80, 180,320,947.20 and 69,195,628.80 is: 103,793,443.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,213,964.80 : 180,320,947.20 = 69,195,628.80 : x
  2. Step 2: Convert to fraction form
    120,213,964.80/180,320,947.20 = 69,195,628.80/x
  3. Step 3: Cross multiply
    120,213,964.80x = 180,320,947.20 × 69,195,628.80
  4. Step 4: Simplify right side
    120,213,964.80x = 12,477,421,327,315,598
  5. Step 5: Solve for x
    x = 12,477,421,327,315,598/120,213,964.80
  6. Step 6: Final answer
    x = 103,793,443.20

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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.