Home / 78,097.45-117,146.16-18,933.13

Finding the Fourth Proportional to 78,097.45, 117,146.16 and 18,933.13

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Solution

The fourth proportional to 78,097.45, 117,146.16 and 18,933.13 is: 28,399.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,097.45 : 117,146.16 = 18,933.13 : x
  2. Step 2: Convert to fraction form
    78,097.45/117,146.16 = 18,933.13/x
  3. Step 3: Cross multiply
    78,097.45x = 117,146.16 × 18,933.13
  4. Step 4: Simplify right side
    78,097.45x = 2,217,943,476.28
  5. Step 5: Solve for x
    x = 2,217,943,476.28/78,097.45
  6. Step 6: Final answer
    x = 28,399.69

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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.