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Finding the Fourth Proportional to 111,983.80, 167,975.67 and 28,877.80

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Solution

The fourth proportional to 111,983.80, 167,975.67 and 28,877.80 is: 43,316.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,983.80 : 167,975.67 = 28,877.80 : x
  2. Step 2: Convert to fraction form
    111,983.80/167,975.67 = 28,877.80/x
  3. Step 3: Cross multiply
    111,983.80x = 167,975.67 × 28,877.80
  4. Step 4: Simplify right side
    111,983.80x = 4,850,767,803.13
  5. Step 5: Solve for x
    x = 4,850,767,803.13/111,983.80
  6. Step 6: Final answer
    x = 43,316.69

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1.5x scale

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.