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Finding the Fourth Proportional to 121,720.52, 182,580.74 and 45,833.34

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Solution

The fourth proportional to 121,720.52, 182,580.74 and 45,833.34 is: 68,749.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,720.52 : 182,580.74 = 45,833.34 : x
  2. Step 2: Convert to fraction form
    121,720.52/182,580.74 = 45,833.34/x
  3. Step 3: Cross multiply
    121,720.52x = 182,580.74 × 45,833.34
  4. Step 4: Simplify right side
    121,720.52x = 8,368,285,133.87
  5. Step 5: Solve for x
    x = 8,368,285,133.87/121,720.52
  6. Step 6: Final answer
    x = 68,749.99

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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.