Home / 123,464.05-170,317.79-78,065.57

Finding the Fourth Proportional to 123,464.05, 170,317.79 and 78,065.57

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Solution

The fourth proportional to 123,464.05, 170,317.79 and 78,065.57 is: 107,690.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,464.05 : 170,317.79 = 78,065.57 : x
  2. Step 2: Convert to fraction form
    123,464.05/170,317.79 = 78,065.57/x
  3. Step 3: Cross multiply
    123,464.05x = 170,317.79 × 78,065.57
  4. Step 4: Simplify right side
    123,464.05x = 13,295,955,685.70
  5. Step 5: Solve for x
    x = 13,295,955,685.70/123,464.05
  6. Step 6: Final answer
    x = 107,690.91

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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.