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Finding the Fourth Proportional to 136,153.90, 204,230.85 and 66,169.90

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Solution

The fourth proportional to 136,153.90, 204,230.85 and 66,169.90 is: 99,254.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,153.90 : 204,230.85 = 66,169.90 : x
  2. Step 2: Convert to fraction form
    136,153.90/204,230.85 = 66,169.90/x
  3. Step 3: Cross multiply
    136,153.90x = 204,230.85 × 66,169.90
  4. Step 4: Simplify right side
    136,153.90x = 13,513,934,921.42
  5. Step 5: Solve for x
    x = 13,513,934,921.42/136,153.90
  6. Step 6: Final answer
    x = 99,254.85

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1.5x scale

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.