Home / 136,021.74-187,656.24-78,650.52

Finding the Fourth Proportional to 136,021.74, 187,656.24 and 78,650.52

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Solution

The fourth proportional to 136,021.74, 187,656.24 and 78,650.52 is: 108,506.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,021.74 : 187,656.24 = 78,650.52 : x
  2. Step 2: Convert to fraction form
    136,021.74/187,656.24 = 78,650.52/x
  3. Step 3: Cross multiply
    136,021.74x = 187,656.24 × 78,650.52
  4. Step 4: Simplify right side
    136,021.74x = 14,759,260,857.24
  5. Step 5: Solve for x
    x = 14,759,260,857.24/136,021.74
  6. Step 6: Final answer
    x = 108,506.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.