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Finding the Fourth Proportional to 112,516.80, 168,775.20 and 108,580.20

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Solution

The fourth proportional to 112,516.80, 168,775.20 and 108,580.20 is: 162,870.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,516.80 : 168,775.20 = 108,580.20 : x
  2. Step 2: Convert to fraction form
    112,516.80/168,775.20 = 108,580.20/x
  3. Step 3: Cross multiply
    112,516.80x = 168,775.20 × 108,580.20
  4. Step 4: Simplify right side
    112,516.80x = 18,325,644,971.04
  5. Step 5: Solve for x
    x = 18,325,644,971.04/112,516.80
  6. Step 6: Final answer
    x = 162,870.30

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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.