Home / 118,084.49-177,061.73-80,686.79

Finding the Fourth Proportional to 118,084.49, 177,061.73 and 80,686.79

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Solution

The fourth proportional to 118,084.49, 177,061.73 and 80,686.79 is: 120,985.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,084.49 : 177,061.73 = 80,686.79 : x
  2. Step 2: Convert to fraction form
    118,084.49/177,061.73 = 80,686.79/x
  3. Step 3: Cross multiply
    118,084.49x = 177,061.73 × 80,686.79
  4. Step 4: Simplify right side
    118,084.49x = 14,286,541,336.80
  5. Step 5: Solve for x
    x = 14,286,541,336.80/118,084.49
  6. Step 6: Final answer
    x = 120,985.76

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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.