Home / 154,288.41-212,907.99-86,293.61

Finding the Fourth Proportional to 154,288.41, 212,907.99 and 86,293.61

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Solution

The fourth proportional to 154,288.41, 212,907.99 and 86,293.61 is: 119,079.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,288.41 : 212,907.99 = 86,293.61 : x
  2. Step 2: Convert to fraction form
    154,288.41/212,907.99 = 86,293.61/x
  3. Step 3: Cross multiply
    154,288.41x = 212,907.99 × 86,293.61
  4. Step 4: Simplify right side
    154,288.41x = 18,372,597,990.40
  5. Step 5: Solve for x
    x = 18,372,597,990.40/154,288.41
  6. Step 6: Final answer
    x = 119,079.57

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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.