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Finding the Fourth Proportional to 112,480.20, 168,720.30 and 98,656.20

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Solution

The fourth proportional to 112,480.20, 168,720.30 and 98,656.20 is: 147,984.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,480.20 : 168,720.30 = 98,656.20 : x
  2. Step 2: Convert to fraction form
    112,480.20/168,720.30 = 98,656.20/x
  3. Step 3: Cross multiply
    112,480.20x = 168,720.30 × 98,656.20
  4. Step 4: Simplify right side
    112,480.20x = 16,645,303,660.86
  5. Step 5: Solve for x
    x = 16,645,303,660.86/112,480.20
  6. Step 6: Final answer
    x = 147,984.30

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1.5x scale

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.