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Finding the Fourth Proportional to 144,618.90, 216,893.37 and 55,815.78

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Solution

The fourth proportional to 144,618.90, 216,893.37 and 55,815.78 is: 83,710.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,618.90 : 216,893.37 = 55,815.78 : x
  2. Step 2: Convert to fraction form
    144,618.90/216,893.37 = 55,815.78/x
  3. Step 3: Cross multiply
    144,618.90x = 216,893.37 × 55,815.78
  4. Step 4: Simplify right side
    144,618.90x = 12,106,072,623.38
  5. Step 5: Solve for x
    x = 12,106,072,623.38/144,618.90
  6. Step 6: Final answer
    x = 83,710.17

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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.