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Finding the Fourth Proportional to 118,119.20, 177,178.80 and 105,216.80

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Solution

The fourth proportional to 118,119.20, 177,178.80 and 105,216.80 is: 157,825.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,119.20 : 177,178.80 = 105,216.80 : x
  2. Step 2: Convert to fraction form
    118,119.20/177,178.80 = 105,216.80/x
  3. Step 3: Cross multiply
    118,119.20x = 177,178.80 × 105,216.80
  4. Step 4: Simplify right side
    118,119.20x = 18,642,186,363.84
  5. Step 5: Solve for x
    x = 18,642,186,363.84/118,119.20
  6. Step 6: Final answer
    x = 157,825.20

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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.