Home / 122,934.70-183,964.65-85,318.30

Finding the Fourth Proportional to 122,934.70, 183,964.65 and 85,318.30

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Solution

The fourth proportional to 122,934.70, 183,964.65 and 85,318.30 is: 127,673.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,934.70 : 183,964.65 = 85,318.30 : x
  2. Step 2: Convert to fraction form
    122,934.70/183,964.65 = 85,318.30/x
  3. Step 3: Cross multiply
    122,934.70x = 183,964.65 × 85,318.30
  4. Step 4: Simplify right side
    122,934.70x = 15,695,551,198.10
  5. Step 5: Solve for x
    x = 15,695,551,198.10/122,934.70
  6. Step 6: Final answer
    x = 127,673.89

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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.