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Finding the Fourth Proportional to 118,563.29, 163,620.15 and 67,580.78

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Solution

The fourth proportional to 118,563.29, 163,620.15 and 67,580.78 is: 93,263.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,563.29 : 163,620.15 = 67,580.78 : x
  2. Step 2: Convert to fraction form
    118,563.29/163,620.15 = 67,580.78/x
  3. Step 3: Cross multiply
    118,563.29x = 163,620.15 × 67,580.78
  4. Step 4: Simplify right side
    118,563.29x = 11,057,577,589.69
  5. Step 5: Solve for x
    x = 11,057,577,589.69/118,563.29
  6. Step 6: Final answer
    x = 93,263.08

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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.