Home / 122,138.02-183,209.37-80,285.26

Finding the Fourth Proportional to 122,138.02, 183,209.37 and 80,285.26

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Solution

The fourth proportional to 122,138.02, 183,209.37 and 80,285.26 is: 120,429.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,138.02 : 183,209.37 = 80,285.26 : x
  2. Step 2: Convert to fraction form
    122,138.02/183,209.37 = 80,285.26/x
  3. Step 3: Cross multiply
    122,138.02x = 183,209.37 × 80,285.26
  4. Step 4: Simplify right side
    122,138.02x = 14,709,011,904.89
  5. Step 5: Solve for x
    x = 14,709,011,904.89/122,138.02
  6. Step 6: Final answer
    x = 120,429.43

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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.