Home / 122,503.40-183,755.10-39,405.80

Finding the Fourth Proportional to 122,503.40, 183,755.10 and 39,405.80

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Solution

The fourth proportional to 122,503.40, 183,755.10 and 39,405.80 is: 59,108.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,503.40 : 183,755.10 = 39,405.80 : x
  2. Step 2: Convert to fraction form
    122,503.40/183,755.10 = 39,405.80/x
  3. Step 3: Cross multiply
    122,503.40x = 183,755.10 × 39,405.80
  4. Step 4: Simplify right side
    122,503.40x = 7,241,016,719.58
  5. Step 5: Solve for x
    x = 7,241,016,719.58/122,503.40
  6. Step 6: Final answer
    x = 59,108.70

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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.