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Finding the Fourth Proportional to 118,370.30, 163,139.78 and 89,621.08

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Solution

The fourth proportional to 118,370.30, 163,139.78 and 89,621.08 is: 123,517.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,370.30 : 163,139.78 = 89,621.08 : x
  2. Step 2: Convert to fraction form
    118,370.30/163,139.78 = 89,621.08/x
  3. Step 3: Cross multiply
    118,370.30x = 163,139.78 × 89,621.08
  4. Step 4: Simplify right side
    118,370.30x = 14,620,763,274.56
  5. Step 5: Solve for x
    x = 14,620,763,274.56/118,370.30
  6. Step 6: Final answer
    x = 123,517.16

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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.