Home / 149,398.95-206,170.60-81,415.94

Finding the Fourth Proportional to 149,398.95, 206,170.60 and 81,415.94

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Solution

The fourth proportional to 149,398.95, 206,170.60 and 81,415.94 is: 112,354.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,398.95 : 206,170.60 = 81,415.94 : x
  2. Step 2: Convert to fraction form
    149,398.95/206,170.60 = 81,415.94/x
  3. Step 3: Cross multiply
    149,398.95x = 206,170.60 × 81,415.94
  4. Step 4: Simplify right side
    149,398.95x = 16,785,573,902.90
  5. Step 5: Solve for x
    x = 16,785,573,902.90/149,398.95
  6. Step 6: Final answer
    x = 112,354.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.