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Finding the Fourth Proportional to 153,899.80, 230,720.10 and 80,027.80

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Solution

The fourth proportional to 153,899.80, 230,720.10 and 80,027.80 is: 119,974.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,899.80 : 230,720.10 = 80,027.80 : x
  2. Step 2: Convert to fraction form
    153,899.80/230,720.10 = 80,027.80/x
  3. Step 3: Cross multiply
    153,899.80x = 230,720.10 × 80,027.80
  4. Step 4: Simplify right side
    153,899.80x = 18,464,022,018.78
  5. Step 5: Solve for x
    x = 18,464,022,018.78/153,899.80
  6. Step 6: Final answer
    x = 119,974.31

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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.