Home / 138,735.32-191,455.25-75,073.12

Finding the Fourth Proportional to 138,735.32, 191,455.25 and 75,073.12

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Solution

The fourth proportional to 138,735.32, 191,455.25 and 75,073.12 is: 103,601.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,735.32 : 191,455.25 = 75,073.12 : x
  2. Step 2: Convert to fraction form
    138,735.32/191,455.25 = 75,073.12/x
  3. Step 3: Cross multiply
    138,735.32x = 191,455.25 × 75,073.12
  4. Step 4: Simplify right side
    138,735.32x = 14,373,142,957.88
  5. Step 5: Solve for x
    x = 14,373,142,957.88/138,735.32
  6. Step 6: Final answer
    x = 103,601.18

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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.