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Finding the Fourth Proportional to 104,937.30, 144,813.61 and 57,190.65

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Solution

The fourth proportional to 104,937.30, 144,813.61 and 57,190.65 is: 78,923.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,937.30 : 144,813.61 = 57,190.65 : x
  2. Step 2: Convert to fraction form
    104,937.30/144,813.61 = 57,190.65/x
  3. Step 3: Cross multiply
    104,937.30x = 144,813.61 × 57,190.65
  4. Step 4: Simplify right side
    104,937.30x = 8,281,984,458.75
  5. Step 5: Solve for x
    x = 8,281,984,458.75/104,937.30
  6. Step 6: Final answer
    x = 78,923.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.