Home / 154,293.41-212,942.55-86,327.60

Finding the Fourth Proportional to 154,293.41, 212,942.55 and 86,327.60

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Solution

The fourth proportional to 154,293.41, 212,942.55 and 86,327.60 is: 119,141.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,293.41 : 212,942.55 = 86,327.60 : x
  2. Step 2: Convert to fraction form
    154,293.41/212,942.55 = 86,327.60/x
  3. Step 3: Cross multiply
    154,293.41x = 212,942.55 × 86,327.60
  4. Step 4: Simplify right side
    154,293.41x = 18,382,819,279.38
  5. Step 5: Solve for x
    x = 18,382,819,279.38/154,293.41
  6. Step 6: Final answer
    x = 119,141.96

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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.