Home / 421,212.75-631,819.13-125,724.75

Finding the Fourth Proportional to 421,212.75, 631,819.13 and 125,724.75

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Solution

The fourth proportional to 421,212.75, 631,819.13 and 125,724.75 is: 188,587.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,212.75 : 631,819.13 = 125,724.75 : x
  2. Step 2: Convert to fraction form
    421,212.75/631,819.13 = 125,724.75/x
  3. Step 3: Cross multiply
    421,212.75x = 631,819.13 × 125,724.75
  4. Step 4: Simplify right side
    421,212.75x = 79,435,302,164.47
  5. Step 5: Solve for x
    x = 79,435,302,164.47/421,212.75
  6. Step 6: Final answer
    x = 188,587.13

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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.