Home / 120,814.38-181,221.69-45,916.92

Finding the Fourth Proportional to 120,814.38, 181,221.69 and 45,916.92

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Solution

The fourth proportional to 120,814.38, 181,221.69 and 45,916.92 is: 68,875.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,814.38 : 181,221.69 = 45,916.92 : x
  2. Step 2: Convert to fraction form
    120,814.38/181,221.69 = 45,916.92/x
  3. Step 3: Cross multiply
    120,814.38x = 181,221.69 × 45,916.92
  4. Step 4: Simplify right side
    120,814.38x = 8,321,141,841.99
  5. Step 5: Solve for x
    x = 8,321,141,841.99/120,814.38
  6. Step 6: Final answer
    x = 68,875.43

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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.