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Finding the Fourth Proportional to 121,876.68, 182,792.61 and 55,300.80

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Solution

The fourth proportional to 121,876.68, 182,792.61 and 55,300.80 is: 82,941.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,876.68 : 182,792.61 = 55,300.80 : x
  2. Step 2: Convert to fraction form
    121,876.68/182,792.61 = 55,300.80/x
  3. Step 3: Cross multiply
    121,876.68x = 182,792.61 × 55,300.80
  4. Step 4: Simplify right side
    121,876.68x = 10,108,577,567.09
  5. Step 5: Solve for x
    x = 10,108,577,567.09/121,876.68
  6. Step 6: Final answer
    x = 82,941.03

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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.