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Finding the Fourth Proportional to 115,416.20, 173,132.40 and 65,520.20

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Solution

The fourth proportional to 115,416.20, 173,132.40 and 65,520.20 is: 98,284.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,416.20 : 173,132.40 = 65,520.20 : x
  2. Step 2: Convert to fraction form
    115,416.20/173,132.40 = 65,520.20/x
  3. Step 3: Cross multiply
    115,416.20x = 173,132.40 × 65,520.20
  4. Step 4: Simplify right side
    115,416.20x = 11,343,669,474.48
  5. Step 5: Solve for x
    x = 11,343,669,474.48/115,416.20
  6. Step 6: Final answer
    x = 98,284.90

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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.