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Finding the Fourth Proportional to 118,400.40, 176,736.89 and 103,453.46

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Solution

The fourth proportional to 118,400.40, 176,736.89 and 103,453.46 is: 154,425.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,400.40 : 176,736.89 = 103,453.46 : x
  2. Step 2: Convert to fraction form
    118,400.40/176,736.89 = 103,453.46/x
  3. Step 3: Cross multiply
    118,400.40x = 176,736.89 × 103,453.46
  4. Step 4: Simplify right side
    118,400.40x = 18,284,042,780.14
  5. Step 5: Solve for x
    x = 18,284,042,780.14/118,400.40
  6. Step 6: Final answer
    x = 154,425.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.