Home / 105,138.33-145,085.38-57,382.41

Finding the Fourth Proportional to 105,138.33, 145,085.38 and 57,382.41

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Solution

The fourth proportional to 105,138.33, 145,085.38 and 57,382.41 is: 79,184.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,138.33 : 145,085.38 = 57,382.41 : x
  2. Step 2: Convert to fraction form
    105,138.33/145,085.38 = 57,382.41/x
  3. Step 3: Cross multiply
    105,138.33x = 145,085.38 × 57,382.41
  4. Step 4: Simplify right side
    105,138.33x = 8,325,348,760.17
  5. Step 5: Solve for x
    x = 8,325,348,760.17/105,138.33
  6. Step 6: Final answer
    x = 79,184.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.