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Finding the Fourth Proportional to 153,921.60, 230,623.20 and 74,865.60

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Solution

The fourth proportional to 153,921.60, 230,623.20 and 74,865.60 is: 112,172.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,921.60 : 230,623.20 = 74,865.60 : x
  2. Step 2: Convert to fraction form
    153,921.60/230,623.20 = 74,865.60/x
  3. Step 3: Cross multiply
    153,921.60x = 230,623.20 × 74,865.60
  4. Step 4: Simplify right side
    153,921.60x = 17,265,744,241.92
  5. Step 5: Solve for x
    x = 17,265,744,241.92/153,921.60
  6. Step 6: Final answer
    x = 112,172.33

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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.