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Finding the Fourth Proportional to 167,380.29, 250,978.02 and 87,218.12

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Solution

The fourth proportional to 167,380.29, 250,978.02 and 87,218.12 is: 130,779.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,380.29 : 250,978.02 = 87,218.12 : x
  2. Step 2: Convert to fraction form
    167,380.29/250,978.02 = 87,218.12/x
  3. Step 3: Cross multiply
    167,380.29x = 250,978.02 × 87,218.12
  4. Step 4: Simplify right side
    167,380.29x = 21,889,830,629.63
  5. Step 5: Solve for x
    x = 21,889,830,629.63/167,380.29
  6. Step 6: Final answer
    x = 130,779.02

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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.