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Finding the Fourth Proportional to 114,693.89, 158,222.63 and 80,721.23

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Solution

The fourth proportional to 114,693.89, 158,222.63 and 80,721.23 is: 111,356.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,693.89 : 158,222.63 = 80,721.23 : x
  2. Step 2: Convert to fraction form
    114,693.89/158,222.63 = 80,721.23/x
  3. Step 3: Cross multiply
    114,693.89x = 158,222.63 × 80,721.23
  4. Step 4: Simplify right side
    114,693.89x = 12,771,924,112.72
  5. Step 5: Solve for x
    x = 12,771,924,112.72/114,693.89
  6. Step 6: Final answer
    x = 111,356.63

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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.