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Finding the Fourth Proportional to 121,987.43, 182,908.86 and 37,722.65

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Solution

The fourth proportional to 121,987.43, 182,908.86 and 37,722.65 is: 56,561.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,987.43 : 182,908.86 = 37,722.65 : x
  2. Step 2: Convert to fraction form
    121,987.43/182,908.86 = 37,722.65/x
  3. Step 3: Cross multiply
    121,987.43x = 182,908.86 × 37,722.65
  4. Step 4: Simplify right side
    121,987.43x = 6,899,806,907.68
  5. Step 5: Solve for x
    x = 6,899,806,907.68/121,987.43
  6. Step 6: Final answer
    x = 56,561.62

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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.