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Finding the Fourth Proportional to 120,374.61, 180,557.58 and 45,491.73

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Solution

The fourth proportional to 120,374.61, 180,557.58 and 45,491.73 is: 68,235.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,374.61 : 180,557.58 = 45,491.73 : x
  2. Step 2: Convert to fraction form
    120,374.61/180,557.58 = 45,491.73/x
  3. Step 3: Cross multiply
    120,374.61x = 180,557.58 × 45,491.73
  4. Step 4: Simplify right side
    120,374.61x = 8,213,876,678.81
  5. Step 5: Solve for x
    x = 8,213,876,678.81/120,374.61
  6. Step 6: Final answer
    x = 68,235.96

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1.5x scale

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.