Home / 138,139.68-190,664.16-97,811.04

Finding the Fourth Proportional to 138,139.68, 190,664.16 and 97,811.04

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Solution

The fourth proportional to 138,139.68, 190,664.16 and 97,811.04 is: 135,001.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,139.68 : 190,664.16 = 97,811.04 : x
  2. Step 2: Convert to fraction form
    138,139.68/190,664.16 = 97,811.04/x
  3. Step 3: Cross multiply
    138,139.68x = 190,664.16 × 97,811.04
  4. Step 4: Simplify right side
    138,139.68x = 18,649,059,780.33
  5. Step 5: Solve for x
    x = 18,649,059,780.33/138,139.68
  6. Step 6: Final answer
    x = 135,001.47

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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.