Home / 127,805.85-176,385.20-76,835.18

Finding the Fourth Proportional to 127,805.85, 176,385.20 and 76,835.18

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Solution

The fourth proportional to 127,805.85, 176,385.20 and 76,835.18 is: 106,040.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,805.85 : 176,385.20 = 76,835.18 : x
  2. Step 2: Convert to fraction form
    127,805.85/176,385.20 = 76,835.18/x
  3. Step 3: Cross multiply
    127,805.85x = 176,385.20 × 76,835.18
  4. Step 4: Simplify right side
    127,805.85x = 13,552,588,648.12
  5. Step 5: Solve for x
    x = 13,552,588,648.12/127,805.85
  6. Step 6: Final answer
    x = 106,040.44

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1.5x scale

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.