Home / 125,382.07-188,103.48-72,108.15

Finding the Fourth Proportional to 125,382.07, 188,103.48 and 72,108.15

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Solution

The fourth proportional to 125,382.07, 188,103.48 and 72,108.15 is: 108,179.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,382.07 : 188,103.48 = 72,108.15 : x
  2. Step 2: Convert to fraction form
    125,382.07/188,103.48 = 72,108.15/x
  3. Step 3: Cross multiply
    125,382.07x = 188,103.48 × 72,108.15
  4. Step 4: Simplify right side
    125,382.07x = 13,563,793,010.84
  5. Step 5: Solve for x
    x = 13,563,793,010.84/125,382.07
  6. Step 6: Final answer
    x = 108,179.69

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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.