Home / 210,223.18-315,147.29-77,072.41

Finding the Fourth Proportional to 210,223.18, 315,147.29 and 77,072.41

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Solution

The fourth proportional to 210,223.18, 315,147.29 and 77,072.41 is: 115,539.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,223.18 : 315,147.29 = 77,072.41 : x
  2. Step 2: Convert to fraction form
    210,223.18/315,147.29 = 77,072.41/x
  3. Step 3: Cross multiply
    210,223.18x = 315,147.29 × 77,072.41
  4. Step 4: Simplify right side
    210,223.18x = 24,289,161,587.37
  5. Step 5: Solve for x
    x = 24,289,161,587.37/210,223.18
  6. Step 6: Final answer
    x = 115,539.88

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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.