Home / 107,421.90-161,120.10-28,542.20

Finding the Fourth Proportional to 107,421.90, 161,120.10 and 28,542.20

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Solution

The fourth proportional to 107,421.90, 161,120.10 and 28,542.20 is: 42,809.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,421.90 : 161,120.10 = 28,542.20 : x
  2. Step 2: Convert to fraction form
    107,421.90/161,120.10 = 28,542.20/x
  3. Step 3: Cross multiply
    107,421.90x = 161,120.10 × 28,542.20
  4. Step 4: Simplify right side
    107,421.90x = 4,598,722,118.22
  5. Step 5: Solve for x
    x = 4,598,722,118.22/107,421.90
  6. Step 6: Final answer
    x = 42,809.91

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1.5x scale

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.