Home / 107,739.02-161,388.21-87,819.50

Finding the Fourth Proportional to 107,739.02, 161,388.21 and 87,819.50

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Solution

The fourth proportional to 107,739.02, 161,388.21 and 87,819.50 is: 131,549.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,739.02 : 161,388.21 = 87,819.50 : x
  2. Step 2: Convert to fraction form
    107,739.02/161,388.21 = 87,819.50/x
  3. Step 3: Cross multiply
    107,739.02x = 161,388.21 × 87,819.50
  4. Step 4: Simplify right side
    107,739.02x = 14,173,031,908.10
  5. Step 5: Solve for x
    x = 14,173,031,908.10/107,739.02
  6. Step 6: Final answer
    x = 131,549.66

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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.