Home / 12,780,139.20-19,163,210.40-5,198,539.20

Finding the Fourth Proportional to 12,780,139.20, 19,163,210.40 and 5,198,539.20

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Solution

The fourth proportional to 12,780,139.20, 19,163,210.40 and 5,198,539.20 is: 7,794,962.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780,139.20 : 19,163,210.40 = 5,198,539.20 : x
  2. Step 2: Convert to fraction form
    12,780,139.20/19,163,210.40 = 5,198,539.20/x
  3. Step 3: Cross multiply
    12,780,139.20x = 19,163,210.40 × 5,198,539.20
  4. Step 4: Simplify right side
    12,780,139.20x = 99,620,700,462,247.67
  5. Step 5: Solve for x
    x = 99,620,700,462,247.67/12,780,139.20
  6. Step 6: Final answer
    x = 7,794,962.08

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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.