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Finding the Fourth Proportional to 144,287.66, 216,435.18 and 68,368.38

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Solution

The fourth proportional to 144,287.66, 216,435.18 and 68,368.38 is: 102,554.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,287.66 : 216,435.18 = 68,368.38 : x
  2. Step 2: Convert to fraction form
    144,287.66/216,435.18 = 68,368.38/x
  3. Step 3: Cross multiply
    144,287.66x = 216,435.18 × 68,368.38
  4. Step 4: Simplify right side
    144,287.66x = 14,797,322,631.61
  5. Step 5: Solve for x
    x = 14,797,322,631.61/144,287.66
  6. Step 6: Final answer
    x = 102,554.32

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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.