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Finding the Fourth Proportional to 112,080.70, 168,121.05 and 64,776.70

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Solution

The fourth proportional to 112,080.70, 168,121.05 and 64,776.70 is: 97,165.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,080.70 : 168,121.05 = 64,776.70 : x
  2. Step 2: Convert to fraction form
    112,080.70/168,121.05 = 64,776.70/x
  3. Step 3: Cross multiply
    112,080.70x = 168,121.05 × 64,776.70
  4. Step 4: Simplify right side
    112,080.70x = 10,890,326,819.54
  5. Step 5: Solve for x
    x = 10,890,326,819.54/112,080.70
  6. Step 6: Final answer
    x = 97,165.05

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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.