Home / 78,315.89-117,473.82-19,150.85

Finding the Fourth Proportional to 78,315.89, 117,473.82 and 19,150.85

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Solution

The fourth proportional to 78,315.89, 117,473.82 and 19,150.85 is: 28,726.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,315.89 : 117,473.82 = 19,150.85 : x
  2. Step 2: Convert to fraction form
    78,315.89/117,473.82 = 19,150.85/x
  3. Step 3: Cross multiply
    78,315.89x = 117,473.82 × 19,150.85
  4. Step 4: Simplify right side
    78,315.89x = 2,249,722,918.38
  5. Step 5: Solve for x
    x = 2,249,722,918.38/78,315.89
  6. Step 6: Final answer
    x = 28,726.27

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1.5x scale

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.