Home / 143,784.56-198,423.48-83,391

Finding the Fourth Proportional to 143,784.56, 198,423.48 and 83,391

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Solution

The fourth proportional to 143,784.56, 198,423.48 and 83,391 is: 115,080.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,784.56 : 198,423.48 = 83,391 : x
  2. Step 2: Convert to fraction form
    143,784.56/198,423.48 = 83,391/x
  3. Step 3: Cross multiply
    143,784.56x = 198,423.48 × 83,391
  4. Step 4: Simplify right side
    143,784.56x = 16,546,732,420.68
  5. Step 5: Solve for x
    x = 16,546,732,420.68/143,784.56
  6. Step 6: Final answer
    x = 115,080.04

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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.