Home / 138,765.36-191,496.19-75,103.16

Finding the Fourth Proportional to 138,765.36, 191,496.19 and 75,103.16

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Solution

The fourth proportional to 138,765.36, 191,496.19 and 75,103.16 is: 103,642.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,765.36 : 191,496.19 = 75,103.16 : x
  2. Step 2: Convert to fraction form
    138,765.36/191,496.19 = 75,103.16/x
  3. Step 3: Cross multiply
    138,765.36x = 191,496.19 × 75,103.16
  4. Step 4: Simplify right side
    138,765.36x = 14,381,967,851.72
  5. Step 5: Solve for x
    x = 14,381,967,851.72/138,765.36
  6. Step 6: Final answer
    x = 103,642.35

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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.