Home / 80,230.20-120,345.29-21,065.77

Finding the Fourth Proportional to 80,230.20, 120,345.29 and 21,065.77

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Solution

The fourth proportional to 80,230.20, 120,345.29 and 21,065.77 is: 31,598.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,230.20 : 120,345.29 = 21,065.77 : x
  2. Step 2: Convert to fraction form
    80,230.20/120,345.29 = 21,065.77/x
  3. Step 3: Cross multiply
    80,230.20x = 120,345.29 × 21,065.77
  4. Step 4: Simplify right side
    80,230.20x = 2,535,166,442.32
  5. Step 5: Solve for x
    x = 2,535,166,442.32/80,230.20
  6. Step 6: Final answer
    x = 31,598.66

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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.