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Finding the Fourth Proportional to 181,720.79, 250,770.76 and 105,243.22

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Solution

The fourth proportional to 181,720.79, 250,770.76 and 105,243.22 is: 145,233.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,720.79 : 250,770.76 = 105,243.22 : x
  2. Step 2: Convert to fraction form
    181,720.79/250,770.76 = 105,243.22/x
  3. Step 3: Cross multiply
    181,720.79x = 250,770.76 × 105,243.22
  4. Step 4: Simplify right side
    181,720.79x = 26,391,923,315.89
  5. Step 5: Solve for x
    x = 26,391,923,315.89/181,720.79
  6. Step 6: Final answer
    x = 145,233.37

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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.