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Finding the Fourth Proportional to 149,549.79, 206,359.85 and 85,891.69

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Solution

The fourth proportional to 149,549.79, 206,359.85 and 85,891.69 is: 118,519.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,549.79 : 206,359.85 = 85,891.69 : x
  2. Step 2: Convert to fraction form
    149,549.79/206,359.85 = 85,891.69/x
  3. Step 3: Cross multiply
    149,549.79x = 206,359.85 × 85,891.69
  4. Step 4: Simplify right side
    149,549.79x = 17,724,596,737.33
  5. Step 5: Solve for x
    x = 17,724,596,737.33/149,549.79
  6. Step 6: Final answer
    x = 118,519.70

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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.