Home / 204,980.12-307,565.15-78,578.13

Finding the Fourth Proportional to 204,980.12, 307,565.15 and 78,578.13

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Solution

The fourth proportional to 204,980.12, 307,565.15 and 78,578.13 is: 117,903.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,980.12 : 307,565.15 = 78,578.13 : x
  2. Step 2: Convert to fraction form
    204,980.12/307,565.15 = 78,578.13/x
  3. Step 3: Cross multiply
    204,980.12x = 307,565.15 × 78,578.13
  4. Step 4: Simplify right side
    204,980.12x = 24,167,893,947.28
  5. Step 5: Solve for x
    x = 24,167,893,947.28/204,980.12
  6. Step 6: Final answer
    x = 117,903.60

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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.