Home / 149,017.11-205,672.82-85,397.55

Finding the Fourth Proportional to 149,017.11, 205,672.82 and 85,397.55

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Solution

The fourth proportional to 149,017.11, 205,672.82 and 85,397.55 is: 117,865.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,017.11 : 205,672.82 = 85,397.55 : x
  2. Step 2: Convert to fraction form
    149,017.11/205,672.82 = 85,397.55/x
  3. Step 3: Cross multiply
    149,017.11x = 205,672.82 × 85,397.55
  4. Step 4: Simplify right side
    149,017.11x = 17,563,954,502.60
  5. Step 5: Solve for x
    x = 17,563,954,502.60/149,017.11
  6. Step 6: Final answer
    x = 117,865.35

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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.