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Finding the Fourth Proportional to 121,754.93, 182,632.46 and 79,670.43

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Solution

The fourth proportional to 121,754.93, 182,632.46 and 79,670.43 is: 119,505.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,754.93 : 182,632.46 = 79,670.43 : x
  2. Step 2: Convert to fraction form
    121,754.93/182,632.46 = 79,670.43/x
  3. Step 3: Cross multiply
    121,754.93x = 182,632.46 × 79,670.43
  4. Step 4: Simplify right side
    121,754.93x = 14,550,406,221.81
  5. Step 5: Solve for x
    x = 14,550,406,221.81/121,754.93
  6. Step 6: Final answer
    x = 119,505.69

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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.