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Finding the Fourth Proportional to 104,722.80, 157,084.20 and 54,783.60

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Solution

The fourth proportional to 104,722.80, 157,084.20 and 54,783.60 is: 82,175.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,722.80 : 157,084.20 = 54,783.60 : x
  2. Step 2: Convert to fraction form
    104,722.80/157,084.20 = 54,783.60/x
  3. Step 3: Cross multiply
    104,722.80x = 157,084.20 × 54,783.60
  4. Step 4: Simplify right side
    104,722.80x = 8,605,637,979.12
  5. Step 5: Solve for x
    x = 8,605,637,979.12/104,722.80
  6. Step 6: Final answer
    x = 82,175.40

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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.