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Finding the Fourth Proportional to 154,616.80, 231,946.80 and 65,869.60

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Solution

The fourth proportional to 154,616.80, 231,946.80 and 65,869.60 is: 98,813.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,616.80 : 231,946.80 = 65,869.60 : x
  2. Step 2: Convert to fraction form
    154,616.80/231,946.80 = 65,869.60/x
  3. Step 3: Cross multiply
    154,616.80x = 231,946.80 × 65,869.60
  4. Step 4: Simplify right side
    154,616.80x = 15,278,242,937.28
  5. Step 5: Solve for x
    x = 15,278,242,937.28/154,616.80
  6. Step 6: Final answer
    x = 98,813.60

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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.