Home / 138,722.20-191,435.22-75,058.60

Finding the Fourth Proportional to 138,722.20, 191,435.22 and 75,058.60

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Solution

The fourth proportional to 138,722.20, 191,435.22 and 75,058.60 is: 103,580.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,722.20 : 191,435.22 = 75,058.60 : x
  2. Step 2: Convert to fraction form
    138,722.20/191,435.22 = 75,058.60/x
  3. Step 3: Cross multiply
    138,722.20x = 191,435.22 × 75,058.60
  4. Step 4: Simplify right side
    138,722.20x = 14,368,859,603.89
  5. Step 5: Solve for x
    x = 14,368,859,603.89/138,722.20
  6. Step 6: Final answer
    x = 103,580.10

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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.