Home / 81,222.07-121,537.86-67,050.31

Finding the Fourth Proportional to 81,222.07, 121,537.86 and 67,050.31

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Solution

The fourth proportional to 81,222.07, 121,537.86 and 67,050.31 is: 100,331.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,222.07 : 121,537.86 = 67,050.31 : x
  2. Step 2: Convert to fraction form
    81,222.07/121,537.86 = 67,050.31/x
  3. Step 3: Cross multiply
    81,222.07x = 121,537.86 × 67,050.31
  4. Step 4: Simplify right side
    81,222.07x = 8,149,151,189.74
  5. Step 5: Solve for x
    x = 8,149,151,189.74/81,222.07
  6. Step 6: Final answer
    x = 100,331.73

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1.5x scale

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.