Home / 210,010.70-315,016.05-76,895.30

Finding the Fourth Proportional to 210,010.70, 315,016.05 and 76,895.30

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Solution

The fourth proportional to 210,010.70, 315,016.05 and 76,895.30 is: 115,342.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,010.70 : 315,016.05 = 76,895.30 : x
  2. Step 2: Convert to fraction form
    210,010.70/315,016.05 = 76,895.30/x
  3. Step 3: Cross multiply
    210,010.70x = 315,016.05 × 76,895.30
  4. Step 4: Simplify right side
    210,010.70x = 24,223,253,669.57
  5. Step 5: Solve for x
    x = 24,223,253,669.57/210,010.70
  6. Step 6: Final answer
    x = 115,342.95

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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.