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Finding the Fourth Proportional to 121,575.44, 167,782.56 and 67,870.94

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Solution

The fourth proportional to 121,575.44, 167,782.56 and 67,870.94 is: 93,666.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,575.44 : 167,782.56 = 67,870.94 : x
  2. Step 2: Convert to fraction form
    121,575.44/167,782.56 = 67,870.94/x
  3. Step 3: Cross multiply
    121,575.44x = 167,782.56 × 67,870.94
  4. Step 4: Simplify right side
    121,575.44x = 11,387,560,062.81
  5. Step 5: Solve for x
    x = 11,387,560,062.81/121,575.44
  6. Step 6: Final answer
    x = 93,666.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.