Home / 122,436.60-183,762.90-72,454.20

Finding the Fourth Proportional to 122,436.60, 183,762.90 and 72,454.20

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Solution

The fourth proportional to 122,436.60, 183,762.90 and 72,454.20 is: 108,745.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,436.60 : 183,762.90 = 72,454.20 : x
  2. Step 2: Convert to fraction form
    122,436.60/183,762.90 = 72,454.20/x
  3. Step 3: Cross multiply
    122,436.60x = 183,762.90 × 72,454.20
  4. Step 4: Simplify right side
    122,436.60x = 13,314,393,909.18
  5. Step 5: Solve for x
    x = 13,314,393,909.18/122,436.60
  6. Step 6: Final answer
    x = 108,745.21

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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.