Home / 127,808.10-176,388.30-76,837.43

Finding the Fourth Proportional to 127,808.10, 176,388.30 and 76,837.43

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Solution

The fourth proportional to 127,808.10, 176,388.30 and 76,837.43 is: 106,043.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,808.10 : 176,388.30 = 76,837.43 : x
  2. Step 2: Convert to fraction form
    127,808.10/176,388.30 = 76,837.43/x
  3. Step 3: Cross multiply
    127,808.10x = 176,388.30 × 76,837.43
  4. Step 4: Simplify right side
    127,808.10x = 13,553,224,095.04
  5. Step 5: Solve for x
    x = 13,553,224,095.04/127,808.10
  6. Step 6: Final answer
    x = 106,043.55

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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.