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Finding the Fourth Proportional to 136,152.90, 204,229.35 and 66,168.90

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Solution

The fourth proportional to 136,152.90, 204,229.35 and 66,168.90 is: 99,253.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,152.90 : 204,229.35 = 66,168.90 : x
  2. Step 2: Convert to fraction form
    136,152.90/204,229.35 = 66,168.90/x
  3. Step 3: Cross multiply
    136,152.90x = 204,229.35 × 66,168.90
  4. Step 4: Simplify right side
    136,152.90x = 13,513,631,437.22
  5. Step 5: Solve for x
    x = 13,513,631,437.22/136,152.90
  6. Step 6: Final answer
    x = 99,253.35

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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.