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Finding the Fourth Proportional to 118,143.34, 163,042.12 and 67,164.68

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Solution

The fourth proportional to 118,143.34, 163,042.12 and 67,164.68 is: 92,689.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,143.34 : 163,042.12 = 67,164.68 : x
  2. Step 2: Convert to fraction form
    118,143.34/163,042.12 = 67,164.68/x
  3. Step 3: Cross multiply
    118,143.34x = 163,042.12 × 67,164.68
  4. Step 4: Simplify right side
    118,143.34x = 10,950,671,816.32
  5. Step 5: Solve for x
    x = 10,950,671,816.32/118,143.34
  6. Step 6: Final answer
    x = 92,689.71

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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.