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Finding the Fourth Proportional to 105,530.80, 158,296.20 and 92,408.80

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Solution

The fourth proportional to 105,530.80, 158,296.20 and 92,408.80 is: 138,613.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,530.80 : 158,296.20 = 92,408.80 : x
  2. Step 2: Convert to fraction form
    105,530.80/158,296.20 = 92,408.80/x
  3. Step 3: Cross multiply
    105,530.80x = 158,296.20 × 92,408.80
  4. Step 4: Simplify right side
    105,530.80x = 14,627,961,886.56
  5. Step 5: Solve for x
    x = 14,627,961,886.56/105,530.80
  6. Step 6: Final answer
    x = 138,613.20

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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.