Home / 78,214.45-117,320.46-19,049.62

Finding the Fourth Proportional to 78,214.45, 117,320.46 and 19,049.62

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Solution

The fourth proportional to 78,214.45, 117,320.46 and 19,049.62 is: 28,574.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,214.45 : 117,320.46 = 19,049.62 : x
  2. Step 2: Convert to fraction form
    78,214.45/117,320.46 = 19,049.62/x
  3. Step 3: Cross multiply
    78,214.45x = 117,320.46 × 19,049.62
  4. Step 4: Simplify right side
    78,214.45x = 2,234,910,181.23
  5. Step 5: Solve for x
    x = 2,234,910,181.23/78,214.45
  6. Step 6: Final answer
    x = 28,574.13

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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.