Home / 117,784.85-162,470.20-102,713.69

Finding the Fourth Proportional to 117,784.85, 162,470.20 and 102,713.69

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Solution

The fourth proportional to 117,784.85, 162,470.20 and 102,713.69 is: 141,681.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,784.85 : 162,470.20 = 102,713.69 : x
  2. Step 2: Convert to fraction form
    117,784.85/162,470.20 = 102,713.69/x
  3. Step 3: Cross multiply
    117,784.85x = 162,470.20 × 102,713.69
  4. Step 4: Simplify right side
    117,784.85x = 16,687,912,431.12
  5. Step 5: Solve for x
    x = 16,687,912,431.12/117,784.85
  6. Step 6: Final answer
    x = 141,681.32

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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.