Home / 80,919,467.80-121,379,201.70-71,566,106.20

Finding the Fourth Proportional to 80,919,467.80, 121,379,201.70 and 71,566,106.20

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Solution

The fourth proportional to 80,919,467.80, 121,379,201.70 and 71,566,106.20 is: 107,349,159.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,919,467.80 : 121,379,201.70 = 71,566,106.20 : x
  2. Step 2: Convert to fraction form
    80,919,467.80/121,379,201.70 = 71,566,106.20/x
  3. Step 3: Cross multiply
    80,919,467.80x = 121,379,201.70 × 71,566,106.20
  4. Step 4: Simplify right side
    80,919,467.80x = 8,686,636,839,333,421
  5. Step 5: Solve for x
    x = 8,686,636,839,333,421/80,919,467.80
  6. Step 6: Final answer
    x = 107,349,159.30

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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.