Home / 138,475.32-190,872.06-108,208.04

Finding the Fourth Proportional to 138,475.32, 190,872.06 and 108,208.04

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Solution

The fourth proportional to 138,475.32, 190,872.06 and 108,208.04 is: 149,152.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,475.32 : 190,872.06 = 108,208.04 : x
  2. Step 2: Convert to fraction form
    138,475.32/190,872.06 = 108,208.04/x
  3. Step 3: Cross multiply
    138,475.32x = 190,872.06 × 108,208.04
  4. Step 4: Simplify right side
    138,475.32x = 20,653,891,503.36
  5. Step 5: Solve for x
    x = 20,653,891,503.36/138,475.32
  6. Step 6: Final answer
    x = 149,152.15

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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.