Home / 121,105.95-181,671.31-46,289.06

Finding the Fourth Proportional to 121,105.95, 181,671.31 and 46,289.06

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Solution

The fourth proportional to 121,105.95, 181,671.31 and 46,289.06 is: 69,438.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,105.95 : 181,671.31 = 46,289.06 : x
  2. Step 2: Convert to fraction form
    121,105.95/181,671.31 = 46,289.06/x
  3. Step 3: Cross multiply
    121,105.95x = 181,671.31 × 46,289.06
  4. Step 4: Simplify right side
    121,105.95x = 8,409,394,761.17
  5. Step 5: Solve for x
    x = 8,409,394,761.17/121,105.95
  6. Step 6: Final answer
    x = 69,438.33

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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.