Home / 110,021.90-151,819.72-87,415.61

Finding the Fourth Proportional to 110,021.90, 151,819.72 and 87,415.61

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Solution

The fourth proportional to 110,021.90, 151,819.72 and 87,415.61 is: 120,625.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,021.90 : 151,819.72 = 87,415.61 : x
  2. Step 2: Convert to fraction form
    110,021.90/151,819.72 = 87,415.61/x
  3. Step 3: Cross multiply
    110,021.90x = 151,819.72 × 87,415.61
  4. Step 4: Simplify right side
    110,021.90x = 13,271,412,456.19
  5. Step 5: Solve for x
    x = 13,271,412,456.19/110,021.90
  6. Step 6: Final answer
    x = 120,625.19

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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.