Home / 120,621.20-180,931.80-41,727.20

Finding the Fourth Proportional to 120,621.20, 180,931.80 and 41,727.20

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Solution

The fourth proportional to 120,621.20, 180,931.80 and 41,727.20 is: 62,590.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,621.20 : 180,931.80 = 41,727.20 : x
  2. Step 2: Convert to fraction form
    120,621.20/180,931.80 = 41,727.20/x
  3. Step 3: Cross multiply
    120,621.20x = 180,931.80 × 41,727.20
  4. Step 4: Simplify right side
    120,621.20x = 7,549,777,404.96
  5. Step 5: Solve for x
    x = 7,549,777,404.96/120,621.20
  6. Step 6: Final answer
    x = 62,590.80

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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.