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Finding the Fourth Proportional to 120,337.71, 180,371.22 and 45,406.98

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Solution

The fourth proportional to 120,337.71, 180,371.22 and 45,406.98 is: 68,059.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,337.71 : 180,371.22 = 45,406.98 : x
  2. Step 2: Convert to fraction form
    120,337.71/180,371.22 = 45,406.98/x
  3. Step 3: Cross multiply
    120,337.71x = 180,371.22 × 45,406.98
  4. Step 4: Simplify right side
    120,337.71x = 8,190,112,379.12
  5. Step 5: Solve for x
    x = 8,190,112,379.12/120,337.71
  6. Step 6: Final answer
    x = 68,059.40

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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.