Home / 122,171.28-183,312-77,786.52

Finding the Fourth Proportional to 122,171.28, 183,312 and 77,786.52

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Solution

The fourth proportional to 122,171.28, 183,312 and 77,786.52 is: 116,714.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,171.28 : 183,312 = 77,786.52 : x
  2. Step 2: Convert to fraction form
    122,171.28/183,312 = 77,786.52/x
  3. Step 3: Cross multiply
    122,171.28x = 183,312 × 77,786.52
  4. Step 4: Simplify right side
    122,171.28x = 14,259,202,554.24
  5. Step 5: Solve for x
    x = 14,259,202,554.24/122,171.28
  6. Step 6: Final answer
    x = 116,714.85

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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.