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Finding the Fourth Proportional to 149,757.15, 206,656.72 and 85,224.45

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Solution

The fourth proportional to 149,757.15, 206,656.72 and 85,224.45 is: 117,605.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,757.15 : 206,656.72 = 85,224.45 : x
  2. Step 2: Convert to fraction form
    149,757.15/206,656.72 = 85,224.45/x
  3. Step 3: Cross multiply
    149,757.15x = 206,656.72 × 85,224.45
  4. Step 4: Simplify right side
    149,757.15x = 17,612,205,862.71
  5. Step 5: Solve for x
    x = 17,612,205,862.71/149,757.15
  6. Step 6: Final answer
    x = 117,605.11

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1.5x scale

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.