Home / 125,460.64-188,243.58-78,115.36

Finding the Fourth Proportional to 125,460.64, 188,243.58 and 78,115.36

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Solution

The fourth proportional to 125,460.64, 188,243.58 and 78,115.36 is: 117,205.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,460.64 : 188,243.58 = 78,115.36 : x
  2. Step 2: Convert to fraction form
    125,460.64/188,243.58 = 78,115.36/x
  3. Step 3: Cross multiply
    125,460.64x = 188,243.58 × 78,115.36
  4. Step 4: Simplify right side
    125,460.64x = 14,704,715,019.39
  5. Step 5: Solve for x
    x = 14,704,715,019.39/125,460.64
  6. Step 6: Final answer
    x = 117,205.80

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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.