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Finding the Fourth Proportional to 112,390.40, 168,634.20 and 56,986.40

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Solution

The fourth proportional to 112,390.40, 168,634.20 and 56,986.40 is: 85,504.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,390.40 : 168,634.20 = 56,986.40 : x
  2. Step 2: Convert to fraction form
    112,390.40/168,634.20 = 56,986.40/x
  3. Step 3: Cross multiply
    112,390.40x = 168,634.20 × 56,986.40
  4. Step 4: Simplify right side
    112,390.40x = 9,609,855,974.88
  5. Step 5: Solve for x
    x = 9,609,855,974.88/112,390.40
  6. Step 6: Final answer
    x = 85,504.24

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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.