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Finding the Fourth Proportional to 118,402.66, 176,740.25 and 103,455.72

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Solution

The fourth proportional to 118,402.66, 176,740.25 and 103,455.72 is: 154,428.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,402.66 : 176,740.25 = 103,455.72 : x
  2. Step 2: Convert to fraction form
    118,402.66/176,740.25 = 103,455.72/x
  3. Step 3: Cross multiply
    118,402.66x = 176,740.25 × 103,455.72
  4. Step 4: Simplify right side
    118,402.66x = 18,284,789,816.73
  5. Step 5: Solve for x
    x = 18,284,789,816.73/118,402.66
  6. Step 6: Final answer
    x = 154,428.88

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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.