Home / 118,972.12-178,237.50-85,168.36

Finding the Fourth Proportional to 118,972.12, 178,237.50 and 85,168.36

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Solution

The fourth proportional to 118,972.12, 178,237.50 and 85,168.36 is: 127,594.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,972.12 : 178,237.50 = 85,168.36 : x
  2. Step 2: Convert to fraction form
    118,972.12/178,237.50 = 85,168.36/x
  3. Step 3: Cross multiply
    118,972.12x = 178,237.50 × 85,168.36
  4. Step 4: Simplify right side
    118,972.12x = 15,180,195,565.50
  5. Step 5: Solve for x
    x = 15,180,195,565.50/118,972.12
  6. Step 6: Final answer
    x = 127,594.56

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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.