Home / 84,822.90-127,234.35-81,323.70

Finding the Fourth Proportional to 84,822.90, 127,234.35 and 81,323.70

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Solution

The fourth proportional to 84,822.90, 127,234.35 and 81,323.70 is: 121,985.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,822.90 : 127,234.35 = 81,323.70 : x
  2. Step 2: Convert to fraction form
    84,822.90/127,234.35 = 81,323.70/x
  3. Step 3: Cross multiply
    84,822.90x = 127,234.35 × 81,323.70
  4. Step 4: Simplify right side
    84,822.90x = 10,347,168,109.10
  5. Step 5: Solve for x
    x = 10,347,168,109.10/84,822.90
  6. Step 6: Final answer
    x = 121,985.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.