Home / 76,134.91-114,194.14-19,980.61

Finding the Fourth Proportional to 76,134.91, 114,194.14 and 19,980.61

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Solution

The fourth proportional to 76,134.91, 114,194.14 and 19,980.61 is: 29,968.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,134.91 : 114,194.14 = 19,980.61 : x
  2. Step 2: Convert to fraction form
    76,134.91/114,194.14 = 19,980.61/x
  3. Step 3: Cross multiply
    76,134.91x = 114,194.14 × 19,980.61
  4. Step 4: Simplify right side
    76,134.91x = 2,281,668,575.63
  5. Step 5: Solve for x
    x = 2,281,668,575.63/76,134.91
  6. Step 6: Final answer
    x = 29,968.76

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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.