Home / 105,065.64-144,990.27-57,318.65

Finding the Fourth Proportional to 105,065.64, 144,990.27 and 57,318.65

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Solution

The fourth proportional to 105,065.64, 144,990.27 and 57,318.65 is: 79,099.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,065.64 : 144,990.27 = 57,318.65 : x
  2. Step 2: Convert to fraction form
    105,065.64/144,990.27 = 57,318.65/x
  3. Step 3: Cross multiply
    105,065.64x = 144,990.27 × 57,318.65
  4. Step 4: Simplify right side
    105,065.64x = 8,310,645,814.58
  5. Step 5: Solve for x
    x = 8,310,645,814.58/105,065.64
  6. Step 6: Final answer
    x = 79,099.56

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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.