Home / 115,282.88-172,923.80-45,112.72

Finding the Fourth Proportional to 115,282.88, 172,923.80 and 45,112.72

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Solution

The fourth proportional to 115,282.88, 172,923.80 and 45,112.72 is: 67,668.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,282.88 : 172,923.80 = 45,112.72 : x
  2. Step 2: Convert to fraction form
    115,282.88/172,923.80 = 45,112.72/x
  3. Step 3: Cross multiply
    115,282.88x = 172,923.80 × 45,112.72
  4. Step 4: Simplify right side
    115,282.88x = 7,801,062,970.74
  5. Step 5: Solve for x
    x = 7,801,062,970.74/115,282.88
  6. Step 6: Final answer
    x = 67,668.88

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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.