Home / 127,156.16-175,420.68-76,826

Finding the Fourth Proportional to 127,156.16, 175,420.68 and 76,826

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Solution

The fourth proportional to 127,156.16, 175,420.68 and 76,826 is: 105,986.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,156.16 : 175,420.68 = 76,826 : x
  2. Step 2: Convert to fraction form
    127,156.16/175,420.68 = 76,826/x
  3. Step 3: Cross multiply
    127,156.16x = 175,420.68 × 76,826
  4. Step 4: Simplify right side
    127,156.16x = 13,476,869,161.68
  5. Step 5: Solve for x
    x = 13,476,869,161.68/127,156.16
  6. Step 6: Final answer
    x = 105,986.76

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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.