Home / 81,232,161.12-121,846,669.20-19,821,719.52

Finding the Fourth Proportional to 81,232,161.12, 121,846,669.20 and 19,821,719.52

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Solution

The fourth proportional to 81,232,161.12, 121,846,669.20 and 19,821,719.52 is: 29,732,195.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,232,161.12 : 121,846,669.20 = 19,821,719.52 : x
  2. Step 2: Convert to fraction form
    81,232,161.12/121,846,669.20 = 19,821,719.52/x
  3. Step 3: Cross multiply
    81,232,161.12x = 121,846,669.20 × 19,821,719.52
  4. Step 4: Simplify right side
    81,232,161.12x = 2,415,210,501,328,623
  5. Step 5: Solve for x
    x = 2,415,210,501,328,623/81,232,161.12
  6. Step 6: Final answer
    x = 29,732,195.57

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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.