Home / 125,343.75-172,953.14-82,879.59

Finding the Fourth Proportional to 125,343.75, 172,953.14 and 82,879.59

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Solution

The fourth proportional to 125,343.75, 172,953.14 and 82,879.59 is: 114,359.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,343.75 : 172,953.14 = 82,879.59 : x
  2. Step 2: Convert to fraction form
    125,343.75/172,953.14 = 82,879.59/x
  3. Step 3: Cross multiply
    125,343.75x = 172,953.14 × 82,879.59
  4. Step 4: Simplify right side
    125,343.75x = 14,334,284,918.01
  5. Step 5: Solve for x
    x = 14,334,284,918.01/125,343.75
  6. Step 6: Final answer
    x = 114,359.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.