Home / 120,836.60-181,254.90-78,846.20

Finding the Fourth Proportional to 120,836.60, 181,254.90 and 78,846.20

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Solution

The fourth proportional to 120,836.60, 181,254.90 and 78,846.20 is: 118,269.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,836.60 : 181,254.90 = 78,846.20 : x
  2. Step 2: Convert to fraction form
    120,836.60/181,254.90 = 78,846.20/x
  3. Step 3: Cross multiply
    120,836.60x = 181,254.90 × 78,846.20
  4. Step 4: Simplify right side
    120,836.60x = 14,291,260,096.38
  5. Step 5: Solve for x
    x = 14,291,260,096.38/120,836.60
  6. Step 6: Final answer
    x = 118,269.30

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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.