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Finding the Fourth Proportional to 144,027.20, 216,040.80 and 84,978.20

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Solution

The fourth proportional to 144,027.20, 216,040.80 and 84,978.20 is: 127,467.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,027.20 : 216,040.80 = 84,978.20 : x
  2. Step 2: Convert to fraction form
    144,027.20/216,040.80 = 84,978.20/x
  3. Step 3: Cross multiply
    144,027.20x = 216,040.80 × 84,978.20
  4. Step 4: Simplify right side
    144,027.20x = 18,358,758,310.56
  5. Step 5: Solve for x
    x = 18,358,758,310.56/144,027.20
  6. Step 6: Final answer
    x = 127,467.30

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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.