Home / 120,811.60-181,176.30-45,913.72

Finding the Fourth Proportional to 120,811.60, 181,176.30 and 45,913.72

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Solution

The fourth proportional to 120,811.60, 181,176.30 and 45,913.72 is: 68,854.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,811.60 : 181,176.30 = 45,913.72 : x
  2. Step 2: Convert to fraction form
    120,811.60/181,176.30 = 45,913.72/x
  3. Step 3: Cross multiply
    120,811.60x = 181,176.30 × 45,913.72
  4. Step 4: Simplify right side
    120,811.60x = 8,318,477,908.84
  5. Step 5: Solve for x
    x = 8,318,477,908.84/120,811.60
  6. Step 6: Final answer
    x = 68,854.96

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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.