Home / 118,254.12-177,285.39-80,719.66

Finding the Fourth Proportional to 118,254.12, 177,285.39 and 80,719.66

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Solution

The fourth proportional to 118,254.12, 177,285.39 and 80,719.66 is: 121,014.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,254.12 : 177,285.39 = 80,719.66 : x
  2. Step 2: Convert to fraction form
    118,254.12/177,285.39 = 80,719.66/x
  3. Step 3: Cross multiply
    118,254.12x = 177,285.39 × 80,719.66
  4. Step 4: Simplify right side
    118,254.12x = 14,310,416,403.77
  5. Step 5: Solve for x
    x = 14,310,416,403.77/118,254.12
  6. Step 6: Final answer
    x = 121,014.10

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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.