Home / 121,579.98-167,869.26-78,584.91

Finding the Fourth Proportional to 121,579.98, 167,869.26 and 78,584.91

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Solution

The fourth proportional to 121,579.98, 167,869.26 and 78,584.91 is: 108,504.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,579.98 : 167,869.26 = 78,584.91 : x
  2. Step 2: Convert to fraction form
    121,579.98/167,869.26 = 78,584.91/x
  3. Step 3: Cross multiply
    121,579.98x = 167,869.26 × 78,584.91
  4. Step 4: Simplify right side
    121,579.98x = 13,191,990,688.87
  5. Step 5: Solve for x
    x = 13,191,990,688.87/121,579.98
  6. Step 6: Final answer
    x = 108,504.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.