Home / 459,039.80-688,504.92-122,105.11

Finding the Fourth Proportional to 459,039.80, 688,504.92 and 122,105.11

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Solution

The fourth proportional to 459,039.80, 688,504.92 and 122,105.11 is: 183,143.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,039.80 : 688,504.92 = 122,105.11 : x
  2. Step 2: Convert to fraction form
    459,039.80/688,504.92 = 122,105.11/x
  3. Step 3: Cross multiply
    459,039.80x = 688,504.92 × 122,105.11
  4. Step 4: Simplify right side
    459,039.80x = 84,069,968,992.14
  5. Step 5: Solve for x
    x = 84,069,968,992.14/459,039.80
  6. Step 6: Final answer
    x = 183,143.09

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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.