Home / 138,205.54-207,307.64-53,974.26

Finding the Fourth Proportional to 138,205.54, 207,307.64 and 53,974.26

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Solution

The fourth proportional to 138,205.54, 207,307.64 and 53,974.26 is: 80,961.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,205.54 : 207,307.64 = 53,974.26 : x
  2. Step 2: Convert to fraction form
    138,205.54/207,307.64 = 53,974.26/x
  3. Step 3: Cross multiply
    138,205.54x = 207,307.64 × 53,974.26
  4. Step 4: Simplify right side
    138,205.54x = 11,189,276,461.35
  5. Step 5: Solve for x
    x = 11,189,276,461.35/138,205.54
  6. Step 6: Final answer
    x = 80,961.13

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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.