Home / 212,829.76-319,338.67-111,603.66

Finding the Fourth Proportional to 212,829.76, 319,338.67 and 111,603.66

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Solution

The fourth proportional to 212,829.76, 319,338.67 and 111,603.66 is: 167,454.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,829.76 : 319,338.67 = 111,603.66 : x
  2. Step 2: Convert to fraction form
    212,829.76/319,338.67 = 111,603.66/x
  3. Step 3: Cross multiply
    212,829.76x = 319,338.67 × 111,603.66
  4. Step 4: Simplify right side
    212,829.76x = 35,639,364,351.53
  5. Step 5: Solve for x
    x = 35,639,364,351.53/212,829.76
  6. Step 6: Final answer
    x = 167,454.80

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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.