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Finding the Fourth Proportional to 118,351.40, 177,527.10 and 87,247.40

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Solution

The fourth proportional to 118,351.40, 177,527.10 and 87,247.40 is: 130,871.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,351.40 : 177,527.10 = 87,247.40 : x
  2. Step 2: Convert to fraction form
    118,351.40/177,527.10 = 87,247.40/x
  3. Step 3: Cross multiply
    118,351.40x = 177,527.10 × 87,247.40
  4. Step 4: Simplify right side
    118,351.40x = 15,488,777,904.54
  5. Step 5: Solve for x
    x = 15,488,777,904.54/118,351.40
  6. Step 6: Final answer
    x = 130,871.10

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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.