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Finding the Fourth Proportional to 160,219.20, 240,328.80 and 66,712.80

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Solution

The fourth proportional to 160,219.20, 240,328.80 and 66,712.80 is: 100,069.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,219.20 : 240,328.80 = 66,712.80 : x
  2. Step 2: Convert to fraction form
    160,219.20/240,328.80 = 66,712.80/x
  3. Step 3: Cross multiply
    160,219.20x = 240,328.80 × 66,712.80
  4. Step 4: Simplify right side
    160,219.20x = 16,033,007,168.64
  5. Step 5: Solve for x
    x = 16,033,007,168.64/160,219.20
  6. Step 6: Final answer
    x = 100,069.20

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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.