Home / 154,747.50-213,554.79-87,679.50

Finding the Fourth Proportional to 154,747.50, 213,554.79 and 87,679.50

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Solution

The fourth proportional to 154,747.50, 213,554.79 and 87,679.50 is: 120,999.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,747.50 : 213,554.79 = 87,679.50 : x
  2. Step 2: Convert to fraction form
    154,747.50/213,554.79 = 87,679.50/x
  3. Step 3: Cross multiply
    154,747.50x = 213,554.79 × 87,679.50
  4. Step 4: Simplify right side
    154,747.50x = 18,724,377,209.81
  5. Step 5: Solve for x
    x = 18,724,377,209.81/154,747.50
  6. Step 6: Final answer
    x = 120,999.55

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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.