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Finding the Fourth Proportional to 118,155.56, 163,048.19 and 67,161.20

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Solution

The fourth proportional to 118,155.56, 163,048.19 and 67,161.20 is: 92,678.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,155.56 : 163,048.19 = 67,161.20 : x
  2. Step 2: Convert to fraction form
    118,155.56/163,048.19 = 67,161.20/x
  3. Step 3: Cross multiply
    118,155.56x = 163,048.19 × 67,161.20
  4. Step 4: Simplify right side
    118,155.56x = 10,950,512,098.23
  5. Step 5: Solve for x
    x = 10,950,512,098.23/118,155.56
  6. Step 6: Final answer
    x = 92,678.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.