Home / 138,233.07-207,333.25-81,341.10

Finding the Fourth Proportional to 138,233.07, 207,333.25 and 81,341.10

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Solution

The fourth proportional to 138,233.07, 207,333.25 and 81,341.10 is: 122,002.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,233.07 : 207,333.25 = 81,341.10 : x
  2. Step 2: Convert to fraction form
    138,233.07/207,333.25 = 81,341.10/x
  3. Step 3: Cross multiply
    138,233.07x = 207,333.25 × 81,341.10
  4. Step 4: Simplify right side
    138,233.07x = 16,864,714,621.58
  5. Step 5: Solve for x
    x = 16,864,714,621.58/138,233.07
  6. Step 6: Final answer
    x = 122,002.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.