Home / 100,359.52-138,381.96-82,152.34

Finding the Fourth Proportional to 100,359.52, 138,381.96 and 82,152.34

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Solution

The fourth proportional to 100,359.52, 138,381.96 and 82,152.34 is: 113,276.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,359.52 : 138,381.96 = 82,152.34 : x
  2. Step 2: Convert to fraction form
    100,359.52/138,381.96 = 82,152.34/x
  3. Step 3: Cross multiply
    100,359.52x = 138,381.96 × 82,152.34
  4. Step 4: Simplify right side
    100,359.52x = 11,368,401,827.79
  5. Step 5: Solve for x
    x = 11,368,401,827.79/100,359.52
  6. Step 6: Final answer
    x = 113,276.77

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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.