Home / 115,195.90-172,403.70-70,850.74

Finding the Fourth Proportional to 115,195.90, 172,403.70 and 70,850.74

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Solution

The fourth proportional to 115,195.90, 172,403.70 and 70,850.74 is: 106,036.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,195.90 : 172,403.70 = 70,850.74 : x
  2. Step 2: Convert to fraction form
    115,195.90/172,403.70 = 70,850.74/x
  3. Step 3: Cross multiply
    115,195.90x = 172,403.70 × 70,850.74
  4. Step 4: Simplify right side
    115,195.90x = 12,214,929,723.74
  5. Step 5: Solve for x
    x = 12,214,929,723.74/115,195.90
  6. Step 6: Final answer
    x = 106,036.15

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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.