Home / 120,310.08-180,438.72-40,359.24

Finding the Fourth Proportional to 120,310.08, 180,438.72 and 40,359.24

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Solution

The fourth proportional to 120,310.08, 180,438.72 and 40,359.24 is: 60,530.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,310.08 : 180,438.72 = 40,359.24 : x
  2. Step 2: Convert to fraction form
    120,310.08/180,438.72 = 40,359.24/x
  3. Step 3: Cross multiply
    120,310.08x = 180,438.72 × 40,359.24
  4. Step 4: Simplify right side
    120,310.08x = 7,282,369,605.77
  5. Step 5: Solve for x
    x = 7,282,369,605.77/120,310.08
  6. Step 6: Final answer
    x = 60,530.00

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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.