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Finding the Fourth Proportional to 114,842.40, 171,777.60 and 103,081.20

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Solution

The fourth proportional to 114,842.40, 171,777.60 and 103,081.20 is: 154,185.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,842.40 : 171,777.60 = 103,081.20 : x
  2. Step 2: Convert to fraction form
    114,842.40/171,777.60 = 103,081.20/x
  3. Step 3: Cross multiply
    114,842.40x = 171,777.60 × 103,081.20
  4. Step 4: Simplify right side
    114,842.40x = 17,707,041,141.12
  5. Step 5: Solve for x
    x = 17,707,041,141.12/114,842.40
  6. Step 6: Final answer
    x = 154,185.57

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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.