Home / 120,516.60-180,645.30-45,607.80

Finding the Fourth Proportional to 120,516.60, 180,645.30 and 45,607.80

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Solution

The fourth proportional to 120,516.60, 180,645.30 and 45,607.80 is: 68,362.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,516.60 : 180,645.30 = 45,607.80 : x
  2. Step 2: Convert to fraction form
    120,516.60/180,645.30 = 45,607.80/x
  3. Step 3: Cross multiply
    120,516.60x = 180,645.30 × 45,607.80
  4. Step 4: Simplify right side
    120,516.60x = 8,238,834,713.34
  5. Step 5: Solve for x
    x = 8,238,834,713.34/120,516.60
  6. Step 6: Final answer
    x = 68,362.65

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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.