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Finding the Fourth Proportional to 153,963.20, 230,944.80 and 131,412.80

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Solution

The fourth proportional to 153,963.20, 230,944.80 and 131,412.80 is: 197,119.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,963.20 : 230,944.80 = 131,412.80 : x
  2. Step 2: Convert to fraction form
    153,963.20/230,944.80 = 131,412.80/x
  3. Step 3: Cross multiply
    153,963.20x = 230,944.80 × 131,412.80
  4. Step 4: Simplify right side
    153,963.20x = 30,349,102,813.44
  5. Step 5: Solve for x
    x = 30,349,102,813.44/153,963.20
  6. Step 6: Final answer
    x = 197,119.20

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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.