Home / 211,418,411.80-317,033,139.30-81,983,003.80

Finding the Fourth Proportional to 211,418,411.80, 317,033,139.30 and 81,983,003.80

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Solution

The fourth proportional to 211,418,411.80, 317,033,139.30 and 81,983,003.80 is: 122,937,869.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,418,411.80 : 317,033,139.30 = 81,983,003.80 : x
  2. Step 2: Convert to fraction form
    211,418,411.80/317,033,139.30 = 81,983,003.80/x
  3. Step 3: Cross multiply
    211,418,411.80x = 317,033,139.30 × 81,983,003.80
  4. Step 4: Simplify right side
    211,418,411.80x = 25,991,329,063,957,828
  5. Step 5: Solve for x
    x = 25,991,329,063,957,828/211,418,411.80
  6. Step 6: Final answer
    x = 122,937,869.24

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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.