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Finding the Fourth Proportional to 118,133.82, 177,000.18 and 71,288.28

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Solution

The fourth proportional to 118,133.82, 177,000.18 and 71,288.28 is: 106,811.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,133.82 : 177,000.18 = 71,288.28 : x
  2. Step 2: Convert to fraction form
    118,133.82/177,000.18 = 71,288.28/x
  3. Step 3: Cross multiply
    118,133.82x = 177,000.18 × 71,288.28
  4. Step 4: Simplify right side
    118,133.82x = 12,618,038,391.89
  5. Step 5: Solve for x
    x = 12,618,038,391.89/118,133.82
  6. Step 6: Final answer
    x = 106,811.40

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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.