Home / 210,215.27-315,135.37-77,064.43

Finding the Fourth Proportional to 210,215.27, 315,135.37 and 77,064.43

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Solution

The fourth proportional to 210,215.27, 315,135.37 and 77,064.43 is: 115,527.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,215.27 : 315,135.37 = 77,064.43 : x
  2. Step 2: Convert to fraction form
    210,215.27/315,135.37 = 77,064.43/x
  3. Step 3: Cross multiply
    210,215.27x = 315,135.37 × 77,064.43
  4. Step 4: Simplify right side
    210,215.27x = 24,285,727,276.57
  5. Step 5: Solve for x
    x = 24,285,727,276.57/210,215.27
  6. Step 6: Final answer
    x = 115,527.90

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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.