Home / 115,287.72-173,039.40-71,000.88

Finding the Fourth Proportional to 115,287.72, 173,039.40 and 71,000.88

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Solution

The fourth proportional to 115,287.72, 173,039.40 and 71,000.88 is: 106,567.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,287.72 : 173,039.40 = 71,000.88 : x
  2. Step 2: Convert to fraction form
    115,287.72/173,039.40 = 71,000.88/x
  3. Step 3: Cross multiply
    115,287.72x = 173,039.40 × 71,000.88
  4. Step 4: Simplify right side
    115,287.72x = 12,285,949,674.67
  5. Step 5: Solve for x
    x = 12,285,949,674.67/115,287.72
  6. Step 6: Final answer
    x = 106,567.72

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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.