Home / 118,980.12-178,486.64-40,116.90

Finding the Fourth Proportional to 118,980.12, 178,486.64 and 40,116.90

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Solution

The fourth proportional to 118,980.12, 178,486.64 and 40,116.90 is: 60,180.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,980.12 : 178,486.64 = 40,116.90 : x
  2. Step 2: Convert to fraction form
    118,980.12/178,486.64 = 40,116.90/x
  3. Step 3: Cross multiply
    118,980.12x = 178,486.64 × 40,116.90
  4. Step 4: Simplify right side
    118,980.12x = 7,160,330,688.22
  5. Step 5: Solve for x
    x = 7,160,330,688.22/118,980.12
  6. Step 6: Final answer
    x = 60,180.90

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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.