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Finding the Fourth Proportional to 121,392.60, 182,045.70 and 54,864.60

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Solution

The fourth proportional to 121,392.60, 182,045.70 and 54,864.60 is: 82,277.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,392.60 : 182,045.70 = 54,864.60 : x
  2. Step 2: Convert to fraction form
    121,392.60/182,045.70 = 54,864.60/x
  3. Step 3: Cross multiply
    121,392.60x = 182,045.70 × 54,864.60
  4. Step 4: Simplify right side
    121,392.60x = 9,987,864,512.22
  5. Step 5: Solve for x
    x = 9,987,864,512.22/121,392.60
  6. Step 6: Final answer
    x = 82,277.38

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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.