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Finding the Fourth Proportional to 146,213.10, 219,210.30 and 79,728.30

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Solution

The fourth proportional to 146,213.10, 219,210.30 and 79,728.30 is: 119,532.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,213.10 : 219,210.30 = 79,728.30 : x
  2. Step 2: Convert to fraction form
    146,213.10/219,210.30 = 79,728.30/x
  3. Step 3: Cross multiply
    146,213.10x = 219,210.30 × 79,728.30
  4. Step 4: Simplify right side
    146,213.10x = 17,477,264,561.49
  5. Step 5: Solve for x
    x = 17,477,264,561.49/146,213.10
  6. Step 6: Final answer
    x = 119,532.82

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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.