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Finding the Fourth Proportional to 120,798.56, 181,156.88 and 45,900.64

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Solution

The fourth proportional to 120,798.56, 181,156.88 and 45,900.64 is: 68,835.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,798.56 : 181,156.88 = 45,900.64 : x
  2. Step 2: Convert to fraction form
    120,798.56/181,156.88 = 45,900.64/x
  3. Step 3: Cross multiply
    120,798.56x = 181,156.88 × 45,900.64
  4. Step 4: Simplify right side
    120,798.56x = 8,315,216,732.40
  5. Step 5: Solve for x
    x = 8,315,216,732.40/120,798.56
  6. Step 6: Final answer
    x = 68,835.40

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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.