Home / 210,341.18-315,324.66-77,190.96

Finding the Fourth Proportional to 210,341.18, 315,324.66 and 77,190.96

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Solution

The fourth proportional to 210,341.18, 315,324.66 and 77,190.96 is: 115,717.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,341.18 : 315,324.66 = 77,190.96 : x
  2. Step 2: Convert to fraction form
    210,341.18/315,324.66 = 77,190.96/x
  3. Step 3: Cross multiply
    210,341.18x = 315,324.66 × 77,190.96
  4. Step 4: Simplify right side
    210,341.18x = 24,340,213,217.07
  5. Step 5: Solve for x
    x = 24,340,213,217.07/210,341.18
  6. Step 6: Final answer
    x = 115,717.77

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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.