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Finding the Fourth Proportional to 146,534.80, 219,802.20 and 72,653.20

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Solution

The fourth proportional to 146,534.80, 219,802.20 and 72,653.20 is: 108,979.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,534.80 : 219,802.20 = 72,653.20 : x
  2. Step 2: Convert to fraction form
    146,534.80/219,802.20 = 72,653.20/x
  3. Step 3: Cross multiply
    146,534.80x = 219,802.20 × 72,653.20
  4. Step 4: Simplify right side
    146,534.80x = 15,969,333,197.04
  5. Step 5: Solve for x
    x = 15,969,333,197.04/146,534.80
  6. Step 6: Final answer
    x = 108,979.80

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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.