Home / 120,788.28-181,154.88-45,916.74

Finding the Fourth Proportional to 120,788.28, 181,154.88 and 45,916.74

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Solution

The fourth proportional to 120,788.28, 181,154.88 and 45,916.74 is: 68,864.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,788.28 : 181,154.88 = 45,916.74 : x
  2. Step 2: Convert to fraction form
    120,788.28/181,154.88 = 45,916.74/x
  3. Step 3: Cross multiply
    120,788.28x = 181,154.88 × 45,916.74
  4. Step 4: Simplify right side
    120,788.28x = 8,318,041,524.69
  5. Step 5: Solve for x
    x = 8,318,041,524.69/120,788.28
  6. Step 6: Final answer
    x = 68,864.64

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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.