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Finding the Fourth Proportional to 118,215.20, 177,322.80 and 107,328.80

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Solution

The fourth proportional to 118,215.20, 177,322.80 and 107,328.80 is: 160,993.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,215.20 : 177,322.80 = 107,328.80 : x
  2. Step 2: Convert to fraction form
    118,215.20/177,322.80 = 107,328.80/x
  3. Step 3: Cross multiply
    118,215.20x = 177,322.80 × 107,328.80
  4. Step 4: Simplify right side
    118,215.20x = 19,031,843,336.64
  5. Step 5: Solve for x
    x = 19,031,843,336.64/118,215.20
  6. Step 6: Final answer
    x = 160,993.20

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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.