Home / 122,136.15-183,267.51-81,638.00

Finding the Fourth Proportional to 122,136.15, 183,267.51 and 81,638.00

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Solution

The fourth proportional to 122,136.15, 183,267.51 and 81,638.00 is: 122,499.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,136.15 : 183,267.51 = 81,638.00 : x
  2. Step 2: Convert to fraction form
    122,136.15/183,267.51 = 81,638.00/x
  3. Step 3: Cross multiply
    122,136.15x = 183,267.51 × 81,638.00
  4. Step 4: Simplify right side
    122,136.15x = 14,961,591,656.85
  5. Step 5: Solve for x
    x = 14,961,591,656.85/122,136.15
  6. Step 6: Final answer
    x = 122,499.29

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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.