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Finding the Fourth Proportional to 121,828, 182,768.88 and 51,767.20

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Solution

The fourth proportional to 121,828, 182,768.88 and 51,767.20 is: 77,662.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,828 : 182,768.88 = 51,767.20 : x
  2. Step 2: Convert to fraction form
    121,828/182,768.88 = 51,767.20/x
  3. Step 3: Cross multiply
    121,828x = 182,768.88 × 51,767.20
  4. Step 4: Simplify right side
    121,828x = 9,461,433,164.74
  5. Step 5: Solve for x
    x = 9,461,433,164.74/121,828
  6. Step 6: Final answer
    x = 77,662.22

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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.