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Finding the Fourth Proportional to 118,405.40, 177,650.01 and 73,980.14

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Solution

The fourth proportional to 118,405.40, 177,650.01 and 73,980.14 is: 110,996.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,405.40 : 177,650.01 = 73,980.14 : x
  2. Step 2: Convert to fraction form
    118,405.40/177,650.01 = 73,980.14/x
  3. Step 3: Cross multiply
    118,405.40x = 177,650.01 × 73,980.14
  4. Step 4: Simplify right side
    118,405.40x = 13,142,571,722.55
  5. Step 5: Solve for x
    x = 13,142,571,722.55/118,405.40
  6. Step 6: Final answer
    x = 110,996.39

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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.