Home / 121,530.72-167,705.36-67,811.52

Finding the Fourth Proportional to 121,530.72, 167,705.36 and 67,811.52

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Solution

The fourth proportional to 121,530.72, 167,705.36 and 67,811.52 is: 93,575.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,530.72 : 167,705.36 = 67,811.52 : x
  2. Step 2: Convert to fraction form
    121,530.72/167,705.36 = 67,811.52/x
  3. Step 3: Cross multiply
    121,530.72x = 167,705.36 × 67,811.52
  4. Step 4: Simplify right side
    121,530.72x = 11,372,355,373.75
  5. Step 5: Solve for x
    x = 11,372,355,373.75/121,530.72
  6. Step 6: Final answer
    x = 93,575.97

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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.