Home / 212,746.50-319,174.43-79,628.67

Finding the Fourth Proportional to 212,746.50, 319,174.43 and 79,628.67

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Solution

The fourth proportional to 212,746.50, 319,174.43 and 79,628.67 is: 119,463.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,746.50 : 319,174.43 = 79,628.67 : x
  2. Step 2: Convert to fraction form
    212,746.50/319,174.43 = 79,628.67/x
  3. Step 3: Cross multiply
    212,746.50x = 319,174.43 × 79,628.67
  4. Step 4: Simplify right side
    212,746.50x = 25,415,434,960.76
  5. Step 5: Solve for x
    x = 25,415,434,960.76/212,746.50
  6. Step 6: Final answer
    x = 119,463.47

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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.