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Finding the Fourth Proportional to 144,812.60, 217,364.70 and 69,992.90

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Solution

The fourth proportional to 144,812.60, 217,364.70 and 69,992.90 is: 105,059.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,812.60 : 217,364.70 = 69,992.90 : x
  2. Step 2: Convert to fraction form
    144,812.60/217,364.70 = 69,992.90/x
  3. Step 3: Cross multiply
    144,812.60x = 217,364.70 × 69,992.90
  4. Step 4: Simplify right side
    144,812.60x = 15,213,985,710.63
  5. Step 5: Solve for x
    x = 15,213,985,710.63/144,812.60
  6. Step 6: Final answer
    x = 105,059.82

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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.