Home / 118,288.20-177,140.70-78,630.60

Finding the Fourth Proportional to 118,288.20, 177,140.70 and 78,630.60

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Solution

The fourth proportional to 118,288.20, 177,140.70 and 78,630.60 is: 117,752.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,288.20 : 177,140.70 = 78,630.60 : x
  2. Step 2: Convert to fraction form
    118,288.20/177,140.70 = 78,630.60/x
  3. Step 3: Cross multiply
    118,288.20x = 177,140.70 × 78,630.60
  4. Step 4: Simplify right side
    118,288.20x = 13,928,679,525.42
  5. Step 5: Solve for x
    x = 13,928,679,525.42/118,288.20
  6. Step 6: Final answer
    x = 117,752.06

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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.