Home / 120,451.40-180,719.02-53,898.56

Finding the Fourth Proportional to 120,451.40, 180,719.02 and 53,898.56

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Solution

The fourth proportional to 120,451.40, 180,719.02 and 53,898.56 is: 80,866.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,451.40 : 180,719.02 = 53,898.56 : x
  2. Step 2: Convert to fraction form
    120,451.40/180,719.02 = 53,898.56/x
  3. Step 3: Cross multiply
    120,451.40x = 180,719.02 × 53,898.56
  4. Step 4: Simplify right side
    120,451.40x = 9,740,494,942.61
  5. Step 5: Solve for x
    x = 9,740,494,942.61/120,451.40
  6. Step 6: Final answer
    x = 80,866.60

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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.