Home / 122,406.40-183,635.20-39,308.80

Finding the Fourth Proportional to 122,406.40, 183,635.20 and 39,308.80

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Solution

The fourth proportional to 122,406.40, 183,635.20 and 39,308.80 is: 58,971.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,406.40 : 183,635.20 = 39,308.80 : x
  2. Step 2: Convert to fraction form
    122,406.40/183,635.20 = 39,308.80/x
  3. Step 3: Cross multiply
    122,406.40x = 183,635.20 × 39,308.80
  4. Step 4: Simplify right side
    122,406.40x = 7,218,479,349.76
  5. Step 5: Solve for x
    x = 7,218,479,349.76/122,406.40
  6. Step 6: Final answer
    x = 58,971.42

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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.