Home / 143,784.85-198,423.88-83,391.31

Finding the Fourth Proportional to 143,784.85, 198,423.88 and 83,391.31

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Solution

The fourth proportional to 143,784.85, 198,423.88 and 83,391.31 is: 115,080.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,784.85 : 198,423.88 = 83,391.31 : x
  2. Step 2: Convert to fraction form
    143,784.85/198,423.88 = 83,391.31/x
  3. Step 3: Cross multiply
    143,784.85x = 198,423.88 × 83,391.31
  4. Step 4: Simplify right side
    143,784.85x = 16,546,826,296.36
  5. Step 5: Solve for x
    x = 16,546,826,296.36/143,784.85
  6. Step 6: Final answer
    x = 115,080.46

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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.