Home / 143,823.60-198,475.92-83,429.28

Finding the Fourth Proportional to 143,823.60, 198,475.92 and 83,429.28

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Solution

The fourth proportional to 143,823.60, 198,475.92 and 83,429.28 is: 115,132.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,823.60 : 198,475.92 = 83,429.28 : x
  2. Step 2: Convert to fraction form
    143,823.60/198,475.92 = 83,429.28/x
  3. Step 3: Cross multiply
    143,823.60x = 198,475.92 × 83,429.28
  4. Step 4: Simplify right side
    143,823.60x = 16,558,703,102.94
  5. Step 5: Solve for x
    x = 16,558,703,102.94/143,823.60
  6. Step 6: Final answer
    x = 115,132.03

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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.