Home / 138,539.06-207,507.82-85,068.73

Finding the Fourth Proportional to 138,539.06, 207,507.82 and 85,068.73

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Solution

The fourth proportional to 138,539.06, 207,507.82 and 85,068.73 is: 127,418.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,539.06 : 207,507.82 = 85,068.73 : x
  2. Step 2: Convert to fraction form
    138,539.06/207,507.82 = 85,068.73/x
  3. Step 3: Cross multiply
    138,539.06x = 207,507.82 × 85,068.73
  4. Step 4: Simplify right side
    138,539.06x = 17,652,426,712.47
  5. Step 5: Solve for x
    x = 17,652,426,712.47/138,539.06
  6. Step 6: Final answer
    x = 127,418.41

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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.