Home / 80,518,664.20-120,636,278.70-69,181,256.20

Finding the Fourth Proportional to 80,518,664.20, 120,636,278.70 and 69,181,256.20

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Solution

The fourth proportional to 80,518,664.20, 120,636,278.70 and 69,181,256.20 is: 103,650,121.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,518,664.20 : 120,636,278.70 = 69,181,256.20 : x
  2. Step 2: Convert to fraction form
    80,518,664.20/120,636,278.70 = 69,181,256.20/x
  3. Step 3: Cross multiply
    80,518,664.20x = 120,636,278.70 × 69,181,256.20
  4. Step 4: Simplify right side
    80,518,664.20x = 8,345,769,303,759,304
  5. Step 5: Solve for x
    x = 8,345,769,303,759,304/80,518,664.20
  6. Step 6: Final answer
    x = 103,650,121.21

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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.