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Finding the Fourth Proportional to 146,272.80, 219,409.20 and 87,175.20

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Solution

The fourth proportional to 146,272.80, 219,409.20 and 87,175.20 is: 130,762.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,272.80 : 219,409.20 = 87,175.20 : x
  2. Step 2: Convert to fraction form
    146,272.80/219,409.20 = 87,175.20/x
  3. Step 3: Cross multiply
    146,272.80x = 219,409.20 × 87,175.20
  4. Step 4: Simplify right side
    146,272.80x = 19,127,040,891.84
  5. Step 5: Solve for x
    x = 19,127,040,891.84/146,272.80
  6. Step 6: Final answer
    x = 130,762.80

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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.