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Finding the Fourth Proportional to 121,703.72, 167,952.42 and 71,403.56

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Solution

The fourth proportional to 121,703.72, 167,952.42 and 71,403.56 is: 98,537.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,703.72 : 167,952.42 = 71,403.56 : x
  2. Step 2: Convert to fraction form
    121,703.72/167,952.42 = 71,403.56/x
  3. Step 3: Cross multiply
    121,703.72x = 167,952.42 × 71,403.56
  4. Step 4: Simplify right side
    121,703.72x = 11,992,400,698.62
  5. Step 5: Solve for x
    x = 11,992,400,698.62/121,703.72
  6. Step 6: Final answer
    x = 98,537.67

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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.