Home / 170,100.88-254,985.80-81,331.36

Finding the Fourth Proportional to 170,100.88, 254,985.80 and 81,331.36

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Solution

The fourth proportional to 170,100.88, 254,985.80 and 81,331.36 is: 121,917.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,100.88 : 254,985.80 = 81,331.36 : x
  2. Step 2: Convert to fraction form
    170,100.88/254,985.80 = 81,331.36/x
  3. Step 3: Cross multiply
    170,100.88x = 254,985.80 × 81,331.36
  4. Step 4: Simplify right side
    170,100.88x = 20,738,341,894.69
  5. Step 5: Solve for x
    x = 20,738,341,894.69/170,100.88
  6. Step 6: Final answer
    x = 121,917.90

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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.