Home / 138,431.10-207,355.04-112,187.10

Finding the Fourth Proportional to 138,431.10, 207,355.04 and 112,187.10

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Solution

The fourth proportional to 138,431.10, 207,355.04 and 112,187.10 is: 168,044.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,431.10 : 207,355.04 = 112,187.10 : x
  2. Step 2: Convert to fraction form
    138,431.10/207,355.04 = 112,187.10/x
  3. Step 3: Cross multiply
    138,431.10x = 207,355.04 × 112,187.10
  4. Step 4: Simplify right side
    138,431.10x = 23,262,560,607.98
  5. Step 5: Solve for x
    x = 23,262,560,607.98/138,431.10
  6. Step 6: Final answer
    x = 168,044.32

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1.5x scale

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.