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Finding the Fourth Proportional to 115,492.80, 173,239.20 and 71,169.60

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Solution

The fourth proportional to 115,492.80, 173,239.20 and 71,169.60 is: 106,754.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,492.80 : 173,239.20 = 71,169.60 : x
  2. Step 2: Convert to fraction form
    115,492.80/173,239.20 = 71,169.60/x
  3. Step 3: Cross multiply
    115,492.80x = 173,239.20 × 71,169.60
  4. Step 4: Simplify right side
    115,492.80x = 12,329,364,568.32
  5. Step 5: Solve for x
    x = 12,329,364,568.32/115,492.80
  6. Step 6: Final answer
    x = 106,754.40

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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.