Home / 103,288.56-142,272.66-73,021.80

Finding the Fourth Proportional to 103,288.56, 142,272.66 and 73,021.80

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Solution

The fourth proportional to 103,288.56, 142,272.66 and 73,021.80 is: 100,582.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,288.56 : 142,272.66 = 73,021.80 : x
  2. Step 2: Convert to fraction form
    103,288.56/142,272.66 = 73,021.80/x
  3. Step 3: Cross multiply
    103,288.56x = 142,272.66 × 73,021.80
  4. Step 4: Simplify right side
    103,288.56x = 10,389,005,723.99
  5. Step 5: Solve for x
    x = 10,389,005,723.99/103,288.56
  6. Step 6: Final answer
    x = 100,582.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.