Home / 138,572.37-191,229.80-74,910.29

Finding the Fourth Proportional to 138,572.37, 191,229.80 and 74,910.29

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Solution

The fourth proportional to 138,572.37, 191,229.80 and 74,910.29 is: 103,376.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,572.37 : 191,229.80 = 74,910.29 : x
  2. Step 2: Convert to fraction form
    138,572.37/191,229.80 = 74,910.29/x
  3. Step 3: Cross multiply
    138,572.37x = 191,229.80 × 74,910.29
  4. Step 4: Simplify right side
    138,572.37x = 14,325,078,443.94
  5. Step 5: Solve for x
    x = 14,325,078,443.94/138,572.37
  6. Step 6: Final answer
    x = 103,376.15

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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.