Home / 129,582.28-178,825.62-72,226.36

Finding the Fourth Proportional to 129,582.28, 178,825.62 and 72,226.36

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Solution

The fourth proportional to 129,582.28, 178,825.62 and 72,226.36 is: 99,673.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,582.28 : 178,825.62 = 72,226.36 : x
  2. Step 2: Convert to fraction form
    129,582.28/178,825.62 = 72,226.36/x
  3. Step 3: Cross multiply
    129,582.28x = 178,825.62 × 72,226.36
  4. Step 4: Simplify right side
    129,582.28x = 12,915,923,607.34
  5. Step 5: Solve for x
    x = 12,915,923,607.34/129,582.28
  6. Step 6: Final answer
    x = 99,673.53

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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.