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Finding the Fourth Proportional to 121,153.99, 167,190.72 and 67,438.93

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Solution

The fourth proportional to 121,153.99, 167,190.72 and 67,438.93 is: 93,064.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,153.99 : 167,190.72 = 67,438.93 : x
  2. Step 2: Convert to fraction form
    121,153.99/167,190.72 = 67,438.93/x
  3. Step 3: Cross multiply
    121,153.99x = 167,190.72 × 67,438.93
  4. Step 4: Simplify right side
    121,153.99x = 11,275,163,262.73
  5. Step 5: Solve for x
    x = 11,275,163,262.73/121,153.99
  6. Step 6: Final answer
    x = 93,064.73

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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.