Home / 210,821.87-316,237.41-84,521.60

Finding the Fourth Proportional to 210,821.87, 316,237.41 and 84,521.60

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Solution

The fourth proportional to 210,821.87, 316,237.41 and 84,521.60 is: 126,784.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,821.87 : 316,237.41 = 84,521.60 : x
  2. Step 2: Convert to fraction form
    210,821.87/316,237.41 = 84,521.60/x
  3. Step 3: Cross multiply
    210,821.87x = 316,237.41 × 84,521.60
  4. Step 4: Simplify right side
    210,821.87x = 26,728,890,291.87
  5. Step 5: Solve for x
    x = 26,728,890,291.87/210,821.87
  6. Step 6: Final answer
    x = 126,784.24

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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.