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Finding the Fourth Proportional to 118,089.62, 176,351.68 and 103,781.78

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Solution

The fourth proportional to 118,089.62, 176,351.68 and 103,781.78 is: 154,984.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,089.62 : 176,351.68 = 103,781.78 : x
  2. Step 2: Convert to fraction form
    118,089.62/176,351.68 = 103,781.78/x
  3. Step 3: Cross multiply
    118,089.62x = 176,351.68 × 103,781.78
  4. Step 4: Simplify right side
    118,089.62x = 18,302,091,256.39
  5. Step 5: Solve for x
    x = 18,302,091,256.39/118,089.62
  6. Step 6: Final answer
    x = 154,984.76

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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.