Home / 122,436.10-183,762.15-72,453.70

Finding the Fourth Proportional to 122,436.10, 183,762.15 and 72,453.70

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Solution

The fourth proportional to 122,436.10, 183,762.15 and 72,453.70 is: 108,744.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,436.10 : 183,762.15 = 72,453.70 : x
  2. Step 2: Convert to fraction form
    122,436.10/183,762.15 = 72,453.70/x
  3. Step 3: Cross multiply
    122,436.10x = 183,762.15 × 72,453.70
  4. Step 4: Simplify right side
    122,436.10x = 13,314,247,687.46
  5. Step 5: Solve for x
    x = 13,314,247,687.46/122,436.10
  6. Step 6: Final answer
    x = 108,744.46

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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.