Home / 138,768.17-208,282.77-131,184.05

Finding the Fourth Proportional to 138,768.17, 208,282.77 and 131,184.05

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Solution

The fourth proportional to 138,768.17, 208,282.77 and 131,184.05 is: 196,899.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,768.17 : 208,282.77 = 131,184.05 : x
  2. Step 2: Convert to fraction form
    138,768.17/208,282.77 = 131,184.05/x
  3. Step 3: Cross multiply
    138,768.17x = 208,282.77 × 131,184.05
  4. Step 4: Simplify right side
    138,768.17x = 27,323,376,272.40
  5. Step 5: Solve for x
    x = 27,323,376,272.40/138,768.17
  6. Step 6: Final answer
    x = 196,899.46

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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.