Home / 118,981.89-178,631.22-69,097.79

Finding the Fourth Proportional to 118,981.89, 178,631.22 and 69,097.79

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Solution

The fourth proportional to 118,981.89, 178,631.22 and 69,097.79 is: 103,738.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,981.89 : 178,631.22 = 69,097.79 : x
  2. Step 2: Convert to fraction form
    118,981.89/178,631.22 = 69,097.79/x
  3. Step 3: Cross multiply
    118,981.89x = 178,631.22 × 69,097.79
  4. Step 4: Simplify right side
    118,981.89x = 12,343,021,288.36
  5. Step 5: Solve for x
    x = 12,343,021,288.36/118,981.89
  6. Step 6: Final answer
    x = 103,738.66

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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.